(sin A + cos A)²+ (sin A – cos A)² is equal to
please give only correct answer
Answers
Answered by
1
Answer:
1+(-1)
1-1
=0
Step-by-step explanation:
that's the correct answer
Answered by
0
Answer:
2
Step-by-step explanation:
(sin A + cos A)² + (sin A - cos A)²
Using (a + b)² = a² + b² + 2ab
= sin²A + cos²A + 2sinAcosA + sin²A + cos²A -2sinAcosA
= 1 + 1 [∵ sin²A + cos²A = 1]
= 2
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