Math, asked by akhilesh1282, 6 months ago

Prove that (sinA - 2sin^3A)/(2cos^3A-cosA) =tanA if cotA=root7 show that cosec^2A-sec^2A/cosec^2A+sec^2A=3/4

Answers

Answered by stuezhilventhana1003

Step-by-step explanation:

The triangle was a great place for 457inches to do at a

Answered by sandy1816

$\frac{sina - 2 {sin}^{3} a}{2 {cos}^{3} a - cosa} \\ \\ = \frac{sina(1 - 2 {sin}^{2} a)}{cosa(2 {cos}^{2}a - 1) } \\ \\ = \frac{sina(cos2a)}{cosa(cos2a)} \\ \\ = \frac{sina}{cosa} \\ \\ = tana$

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Prove that (sinA - 2sin^3A)/(2cos^3A-cosA) =tanA​ if cotA=root7 show that cosec^2A-sec^2A/cosec^2A+sec^2A=3/4​

Answers

Prove that (sinA - 2sin^3A)/(2cos^3A-cosA) =tanA if cotA=root7 show that cosec^2A-sec^2A/cosec^2A+sec^2A=3/4