Question

if sin A=cos A and o<A<90 find the value of a

Answer 1

value of A is 45 degree

Answer 2

sinA = cosA
$\frac{sin \: a}{cos \: a} = 1 \\ ( \frac{sin \: a \: }{cos \: a} = tan \: a) \\ tan \: a \: = 1 \\ (tan \: 45 = 1) \\ tan \: a \: = tan \: 45 \\ a = 45$