Question

If tan A =3/4, then find the value of sin2A + cos2A

Answer 1

Answer:

value = 5/2

Step-by-step explanation:

tanA = 3/4

sin2A+Cos2A

divide Cos2A on both sides..

sin2A/cos 2A + cos2A/cos2A

=tan2A + 1

=2(tanA) +1

=2(3/4) +1

=3/2 + 1

= 5/2 Answer!

hope it is helpful

❤

Answer 2

sin2A+cos2A = 31/25.

As sin A = 3/5

cosA = 4/5

sin 2A = 2 sinA cosA

cos 2A = 1- 2 sin^2A