1.

यदि ८०५4 + cos? A =1 dd sin? A + sin* A का मान होगा :

Answer»

Given: CosA + Cos^2A = 1CosA = 1 - Cos^2ATherefore, Sin^2A = CosA

Thus, Sin^2A + Sin^4A= Sin^2A + ( Sin^2A)^2= CosA + Cos^2A . (AS Sin^2A = CosA )= 1



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