due in 1 hour Find an angle explain clear im not good at understanding quick

Question

Find an angle  with  that has the same:

Sine as :  =____ degrees

Cosine as :  =___  degrees

Answer 1

sin190° = sin(360° - 10°) = sin350°, becouse reference angle θ' = 190° - 180° = 10°; Answer is 350°

cos190° = cos(180° - 10°) = cos 170°, becouse reference angle θ' = 190° - 180° = 10°; Answer is 170°.

We using reference angle theorem