Question

If a and b are acute angles and sin a = cos b proved that a+b=90

Answer 1

Answer:

I hope this will help you

Answer 2

$Given \:A\:and \:B\: are \: acute \: angles \:and \\sinA = cosB$

$\implies Sin A = Sin (90 - B)$

$\boxed { \pink { Since, Cos \theta = Sin (90 - \theta) }}$

$\implies A = 90 - B$

$\implies A + B = 90$

$Hence ,Proved .$

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