For what angles are sine and cosine the same? A) 0. B) 45 and 135
C) 45 and 225
D) 45 and 315

Adj has a total of 1075 dance and rock songs on her system. the dance selection is 4 times the size of the rock selection. write a system of equations to represent the situation.

Offering 30 if a plus b plus c equals 68 and ab plus bc plus ca equals 1121, where a, b, and c are all prime numbers, find the value of abc. the answer is 1978 but i need an explanation on how to get that.

Which expression is equal to (f+g)(x)?