If sin A = cos B, then prove that A + B = 90º.
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sinA= cosB
cos(90-A)=cosB
90-A=B
A+B=90
cos(90-A)=cosB
90-A=B
A+B=90
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Answered by
2
Sin a = cos b. Given
=> cos(90- a)=cos b
So,
90-a = b
=>90= a+b,
Hence proved...
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