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)
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-> 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)
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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) (Show Source):