The fundamental trig identities are used to establish other relationships among trigonometric functions. To verify an identity we show that one side of the ...

sin(-0) = = - sin 0 cos(-0). = cos 0 tan(-0). = - tan 0. 1. 1. 1 sin 0 = cos. = tan 0 = CSC 0 sec @ cot @. 1. 1. 1 csc(-0). = - csc 0 sec(-0) = sec✪ cot(-0).

Trigonometric Identities. Reciprocal. Pythagorean. Negative Angle secx = 1 cosx cscx = 1 sinx tanx = sinx cosx cotx = cosx sinx cotx = 1 tanx tanx = 1 cotx.

USEFUL TRIGONOMETRIC IDENTITIES. Definitions tanx = sinx cosx secx = 1 cosx cosecx = 1 sinx cotx = 1 tanx. Fundamental trig identity. (cosx). 2. + (sinx). 2.

The eight basic trigonometric identities are listed in Table 1. As we will see, they are all derived from the definition of the trigonometric functions. Since ...

The functions cos and sin are the basic ones. Each of the others can be expressed in terms of these. In particular tanθ = sinθ cosθ. (4) cotθ = cosθ sinθ. (5).

Trigonometric Identities. Fundamental Identities. Pythagorean Identities. Cofunction Identities. Negative Angle Identities. ( ). ( ). ( ). ( ). ( ). ( ).

An identity involving trigonometric expressions is called a trigonometric identity. If you can show that a specific value of the variable in an equation makes ...

Precalculus: Fundamental Trigonometric Identities. Concepts: Basic Identities, Pythagorean Identities, Cofunction Identities, Even/Odd Identities. Basic ...

Fundamental Trig Identities. Name. Date. 0: 1) If sin = -0.93, find cos -. (0-5). 2. 2) If tan (0) = -1.48, find cot. OL (2-0). (51 – 0 ). 3) If cos cos (0 ...