Question

30. In a right triangle ABC, right angled at B, if tan A = 1, then verify that 2 sin A cos A = 1.
plz do correct answer..

Answer 1

Explanation:

if tan A is 1 so, A = 45°

tan A = sinA /cosA

tan 45°= sin45°/cos 45°

=2sinAcosA

= 2(1/√2)(1/√2/

= 2(1/2)

=1