If A and B are acute angles of a right angled triangle and sinA = cosB, then
A + B =
A - B =
Sin A=Sin (90∘-B)
Therefore, A+B=90∘
If A and B are acute angle such that sin A = cos B then (A + B) = ?
(a) 45o (b) 60o (c) 90o (a) 180o