Question

What are the sine, cosine, and tangent of 7 pi over 4 radians?

Answer 1

sin Θ = negative square root 2 over 2 ; cos Θ = square root 2 over 2 ; tan Θ = −1

Explanation:

Answer 2

sin(7π/4) = sin(315)
sin(7π/4) = -√(2)/2

cos(7π/4) = cos(315)
cos(7π/4) = √(2)/2

tan(7π/4) = tan(315)
tan(7π/4) = -1