Question

Q. (sin A + cos A)2 is equal to
A) sin2 A+ cos2 A
C)sin2 A - cos2 A
B) 1+2 sin A.cos A
D) 1 - sin A.cos A​

Answer 1

Answer:

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Step-by-step explanation:

so (sin A+cos A) whole square is in form (a+b)2

so accordingly it is sin square A+cos square A+2sin.cos A

which is 1+2sin.cos A

because sin square A+cos square A=1

hence option B is ryt