Let , −7−3 be a point on the terminal side of θ. Find the exact values of cosθ, cscθ, and tanθ.

Question

Let , −7−3

 be a point on the terminal side of θ

.Find the exact values of cosθ

, cscθ

, and tanθ

. 

Answer 1

I assume you meant to say (-7,-3).

x = -7

y = -3

r = √(x² + y²) = √[(-7)² + (-3)²] = ?

cosθ = x/r

sinθ = y/r

cscθ = 1/sinθ

tanθ = sinθ / cosθ

Now plug in the numbers and finish from here.