SOLUTION: If a+b=90 degrees, which if the following must be true? A)cos(a)=cos(b) B)sin(a)=sin(b) C)sin(a)=cos(b) D)sin(a)= -cos(b)

Algebra ->  Finance -> SOLUTION: If a+b=90 degrees, which if the following must be true? A)cos(a)=cos(b) B)sin(a)=sin(b) C)sin(a)=cos(b) D)sin(a)= -cos(b)      Log On


   



Question 1089321: If a+b=90 degrees, which if the following must be true?
A)cos(a)=cos(b)
B)sin(a)=sin(b)
C)sin(a)=cos(b)
D)sin(a)= -cos(b)

Answer by ikleyn(52786) About Me  (Show Source):