Question

use the appropriate referene angle to find the following angle measures.
a) cos 225°
b) tan 5π/3
c) csc150°
d) sin 3π/2

Answer 1

math teachers who mix radian measure and degree measure in one question should be deprived of their teaching privileges

Answer 2

find the angle on the unit circle on the last page of the attached cheat sheet. then look at the coordinates. the first coordinate is cosine, the second is sine, and the ratio of sine to cosine is tangent