SOLUTION: If <a + <b = 270°, which of the following is equal to cos a? Show all steps. A. Sin a B. Cos a C. Sin B D. Cos B E. -sin B F. -cos a G. -- sin a H. -- cos B

Algebra ->  Trigonometry-basics -> SOLUTION: If <a + <b = 270°, which of the following is equal to cos a? Show all steps. A. Sin a B. Cos a C. Sin B D. Cos B E. -sin B F. -cos a G. -- sin a H. -- cos B      Log On