Question

Prove that (Sin A+Cos A)^2 = 1+2 SinA CosA

Answer 1

Answer:

Step-by-step explanation:

(Sin A+Cos A)²

Using (a+b)² = a²+b²+2ab

= Sin²A + Cos²A + 2 SinA CosA

= 1 + 2 SinA CosA     ( Sin²A + Cos²A =1)

Answer 2

Step-by-step explanation:

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