Question

trigonometry function of -3π/4​

Answer 1

θ = (-3π/4)c = -3π/4 × 180/π = -135°

-135 + 90 = 45° means it is in 3rd Quadrant

consider, sinθ = y and cosθ = x

•°• In 3rd Quadrant sin θ = - y and cosθ = -x

Trigonometric functions

θ = 45°

sin45° = - 1/√2 and cos45° = -1/√2

cosec = -√2 and sec45° = -√2

tan45° = 1 and cot45° = 1