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Trigonometry – (PDF/EPUB Version)
$19,99
Author(s):
Publisher: QuickStudy Reference Guides
ISBN: 9781423233220
Edition:
Strengthen your trig skills and grades with this powerful and simple tool for reviewing and referencing the most important core concepts. Quickly find that answer you need in this 6 page eGuide reference rather than flipping through a large book. Used in the fields of engineering, medical imaging, geography, land surveying, and video game development to name a few, you may find that trig is here to stay in your career life. Keep this tool by your side and through it all for that extra memory jolt when you need it. Topics covered include: Right Triangles Right Triangle Trigonometry Applications of Trigonometric Ratios Oblique Triangles Circles Trigonometry with the Unit Circle Graphing Trigonometric Functions Solving Trigonometric Equations Trigonometric Identities & Formulas Suggested uses: Quick Reference – instead of digging into a large book to find a core answer you need while studying, use the guide to reinforce quickly and repeatedly Memory – refreshing your memory repeatedly is a foundation of studying, have the core labs handy so you can focus on the larger picture
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Trigonometry – (PDF/EPUB Version)
$19,99
Author(s): I.M. Gelfand; Mark Saul
Publisher: Birkhäuser
ISBN: 9780817639143
Edition:
In a sense, trigonometry sits at the center of high school mathematics. It originates in the study of geometry when we investigate the ratios of sides in similar right triangles, or when we look at the relationship between a chord of a circle and its arc. It leads to a much deeper study of periodic functions, and of the so-called transcendental functions, which cannot be described using finite algebraic processes. It also has many applications to physics, astronomy, and other branches of science. It is a very old subject. Many of the geometric results that we now state in trigonometric terms were given a purely geometric exposition by Euclid. Ptolemy, an early astronomer, began to go beyond Euclid, using the geometry of the time to construct what we now call tables of values of trigonometric functions. Trigonometry is an important introduction to calculus, where one stud ies what mathematicians call analytic properties of functions. One of the goals of this book is to prepare you for a course in calculus by directing your attention away from particular values of a function to a study of the function as an object in itself. This way of thinking is useful not just in calculus, but in many mathematical situations. So trigonometry is a part of pre-calculus, and is related to other pre-calculus topics, such as exponential and logarithmic functions, and complex numbers.
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Delivery Policy
Welcome to our Shipping & Delivery page. We are dedicated to providing you with a seamless and efficient shipping experience. Please take a moment to familiarize yourself with our shipping policies and guidelines.
DELIVERY TIMEFRAME
We understand that receiving your order promptly is of utmost importance. To provide you with an estimated delivery time, we consider two key factors:
Processing Time: Our team requires 3-7 business days to carefully process and prepare your order for shipment.
Shipping Time: Once your order is processed, it will be shipped within 12-18 business days.
In total, you can expect an estimated delivery time of approximately 15-25 business days. Please note that business days are from Monday to Friday, excluding holidays, Saturday, and Sunday.
During peak seasons and promotional sales, delivery times may be slightly longer. We appreciate your patience and understanding during such periods.
SHIPPING CARRIERS
To ensure reliable and efficient delivery, we collaborate with trusted shipping carriers such as USPS, FedEx, 4PX, and Local Post. The selection of the carrier depends on factors such as your destination address and the efficient handling of your items for shipment.
SHIPPING PRICING
We believe in providing transparent and consistent pricing for shipping. Here is our straightforward pricing structure:
Orders below $100: A shipping fee of $5.99 will be applied.
Orders above $100: Enjoy free shipping on your order.
Additional items: No additional shipping charges will be incurred.
TRACKING INFORMATION
Once your order is shipped, you will receive a confirmation email containing a tracking link. It may take 5-7 days for the carrier to scan your package and provide accurate tracking updates. You can use this tracking information to monitor the progress of your shipment and stay updated on its whereabouts.
To easily track your order, please visit our dedicated "Track Order" page and enter the required details.
SHIPPING DELAYS
While we strive to deliver your package within the estimated timeframe, occasional delays may occur due to unforeseen circumstances beyond our control. We cannot be held responsible for delays caused by factors such as:
- Severe weather conditions
- International customs procedures
ITEM NOT RECEIVED
In the event that you have placed an order but have not received it, despite the tracking status indicating delivery, we recommend contacting the carrier directly for assistance. Once the carrier has taken possession of the item, we have limited control over its whereabouts. However, if you encounter any persisting issues, please reach out to us at [email protected], and our dedicated support team will do their best to assist you.
IMPORTANT: It is crucial that you provide accurate shipping and billing addresses. If you realize that the provided address is incorrect, kindly contact us immediately. If the product has already been shipped, a refund cannot be processed until the item has been returned to us.
Thank you for choosing GoteamJS Ebook. We are committed to ensuring a smooth and reliable shipping experience for our valued customers. If you have any further questions or concerns, please do not hesitate to contact our support team.
Return & Refund Policy
Cancel/Modify:
- If you have to cancel/modify the order you can do it within 24 hours of placing the order.
- Please email us at [email protected] to modify/cancel the order.
- If you cancel the order, you will be charged a fee (2.9%+0.3$) of the order value. This is a payment gateway fee, we do not keep this fee
Replace Products
If the item is not as described. This includes wrong color, design, wrong size, wrong style, or poor quality. (Please make sure to have a look at our sizing charts on product pages). Please provide proof that the item received is not as described and our team will resend replacement for you at no additional cost.
Returns:
- Return period: within 30 days of receiving your order.
- The product is in poor condition (damage, incorrect object, or poor printing quality), or if the packaging has been tampered with or the product has been damaged during delivery. This item is eligible for a full refund or replacement
- We do not accept returns for personalized products which are customized by you!
- We do not accept returns if you have chosen the wrong size, wrong color, and wrong type
- Please email us at [email protected], choose your issue, and attach a picture of the damaged item within 30 days of receiving your order.
Refunds:
- If you don’t receive your product after 45 business days from the day you purchased it (which rarely happens), we will refund you 100% of your money.
- Give you a 100% Refund as it’s our fault.
- Please email us at [email protected] to request a refund
- Refunds will be issued to the original form of payment. Depending on the form of payment, you will receive your refund within 5 – 10 business days.
NOTE:
We typically DO NOT accept refunds or replacements due to customer mistakes such as:
- Incorrect selection of sizes, designs, colors, etc.
- Failing to preview the design carefully to see if it’s well set (as all of our printing files are automatically generated precisely as same as the preview on our website)
So please review your order carefully before you check out to ensure your order is correct.
Please allow the 20% difference between the advertised images and the actual item you received. Sometimes advertised images may slightly differ from the actual item in terms of color due to the lighting during photo shooting or the monitor’s display.
Need help?
Contact us at [email protected] for questions related to refunds and returns.
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