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)

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(52787) (Show Source): You can put this solution on YOUR website!
.
C).

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