(sinA+cosecA)^2 + (cosA + secA)^2
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Answered by
132
→ (SinA + CosecA)² + (CosA + SecA)²
→ (SinA + 1/SinA)² + (CosA + 1/CosA)²
→ (Sin²A + 1/Sin²A + 2) + (Cos²A + 1/Cos²A + 2)
→ 1 + 4 + (Sin²A+Cos²A)/Sin²ACos²A
→ 5 + 1/sin²ACos²A
Hope it helps :)
Answered by
3
v
=(sinA+cosecA)²+(cosA+secA)²
=sin²A+cosec²A+2sinAcosecA+cos²A+sec²A+2cosAsecA
=sin²A+cos²A+cosec²A+sec²A+2sinA×1/sinA+2cosA×1/cosA
=1+cosec²A+sec²A+2+2
=5+(1+cot²A)+(1+tan²A)
=7+tan²A+cot²A
Identities used:
1+tan²A=sec²A
1+cot²A=cosec²A
sin²A+cos²A=1
cosecA=1/sinA
secA=1/cosA
i hope it will help you !!
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