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Trigonometric Identities and Formulas Reference Sheet, Study notes of Trigonometry

Columbia – Greene Community College (CGCC)Trigonometry

TrigonometryCalculusLinear Algebra

Various trigonometric identities and formulas, including pythagorean identities, double angle identities, half angle identities, tangent formulas, addition and subtraction formulas, and product to sum formulas.

What you will learn

What are the Pythagorean identities in trigonometry?
How do you find the value of cos(2x) using the given identities?
What is the formula for sin(A+B) in terms of sin A and cos B?

Typology: Study notes

2021/2022

Uploaded on 09/12/2022

johnatan 🇺🇸

(27)

29 documents

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Partial preview of the text

Download Trigonometric Identities and Formulas Reference Sheet and more Study notes Trigonometry in PDF only on Docsity! Trigonometric Reference Sheet Pythagorean Identities sin2x + cos2x = 1 (1) 1 + cot2x = csc2x (2) tan2x + 1 = sec2x (3) Double Angle Identities sin(2x) = 2*sin x*cos x (4) cos(2x) = cos2x - sin2x (5) cos(2x) = 2*cos2x – 1 (6) cos(2x) = 1 – 2*sin2x (7) Half Angle identities cos2x = 1 2 (1+cos(2x)) (8) sin2x = 1 2 (1 – cos(2x)) (9) Tangent formulas tan x = sin 𝑥 cos 𝑥 (10) 𝑑 𝑑𝑥 tan x = sec2x (11)

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