Question

Prove that sin2A+ cos2A=1
answer plzz...!! ​

Answer 1

Answer:

Here is ur answer .

Sin 2A+ cos 2A = 1

As we know that identity

Sin ^theta + cos ^2 theta =1

Here is also same as

Here theta is 2A .

And theta is same so

By using this identity

Sin 2A + Cos 2A =1

1 = 1

LHS =RHS

Hence proved !!

Hope it helps you .

Answer 2

Answer:

Here is the answer.

Hope it helps you.