Let θ be the angle in standard position whose terminal side contains the given point, then compute cos θ and sin θ . ( − 6 , − 8 )

Question

Let
θ
be the angle in standard position whose terminal side contains the given point, then compute
cos
θ
and
sin
θ
.

(
−
6
,
−
8
)

Answer 1

r = √[(-6)² + (-8)²] = 10

 

(-6, -8) = (x,y)

 

cosθ = x/r = -6/10 = -3/5

 

sinθ = y/r = -8/10 = -4/5