Question

(sin A + cos A)² – 2 sin A .cos A बराबर है -
(i) 0 (ii) 2 (iii) 1 (iv) (sin² A – cos² A)

Answer 1

(iv) (sin² A – cos² A) is the correct option

Answer 2

Answer:

sin2A+cos2A+2sinAcosA-2sinAcosA

sin2A+cos2A

1