1.

Prove (1+ sin 2A+cos 2a/sin A + cos A) = 2 cos A​

Answer»

Answer:

LHS

1+cos2A+sin2A/SINA+cosA

=(2cos²A+2sinA cosA)

________________________

sinA+cosA

=2COSA(sinA + COS A)

__________________

(sinA+cosA)

=2cosA= RHS....

PROVED...

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