Question

Cos theta=9/41 and the terminal arm of the angle is in quad.4. Find remaining trigonometri functions?

Answer 1

cos(Θ) = 9/41 = x/r

use Pythagoras to find y
... x^2 + y^2 = r^2

sin(Θ) = y/r ... remember Q IV

tan(Θ) = y/r

Answer 2

oops

tan(Θ) = y/x

Answer 3

Use trigonometric identities and reciprocals of sin cos and tan to find other trigonometric functions 😁

Answer 4

Good