Question

How do you simplify :

(sinθ+cosθ)^2

Answer 1

use identity (a+b)^2
u get
sin^2@ + cos^2@ +2sin@cos@
as sin^2@+cos^2@=1
so 1+ 2sin@cos@ answer ...

Answer 2

Answer-:

we know that (a+b)^2= a^2+b^2+ 2ab

So we put here a= sin theta and b= cos theta

Now,

(Sin theta+ cos theta)^2

=> sin^2 theta + cos^2 theta + 2 sin theta. cos theta

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Be brainly.....☺️