Hello all! I just registered and have a test over double angle and trigonometric addition formulas on Tuesday, but there are a few problems I can't figure out.
Hello all! I just registered and have a test over double angle and trigonometric addition formulas on Tuesday, but there are a few problems I can't figure out.
1.
set each factor equal to 0 and solve.
2.
for what angles do cosine and sine have opposite values?