Basic Trigonometric Identities Section 7-1 Basic Trigonometric Identities

Reciprocal Identities

Quotient Identities

Pythagorean Identities

Symmetry Identities

Solve for tangent

Prove that each equation is not a trigonometric identity by producing a counterexample.

Prove that sin x cos x = tan x is not a trigonometric identity by producing a counter example

Prove that sin x tan x = cos x is not a trigonometric identity by producing a counter example Use π/6 sin π/6 tan π/6 =cos π/6 .28≠.86

Prove that sec x/tan x = sin x is not a trigonometric identity by producing a counter example Let x = 45° 1.41≠.707

Simplify