Question

if sina + 1/sina = 5 then find the value of sin2a + 1/sin2a​

Answer 1

Answer:

$\sin(a) + \frac{1}{ \sin(a) } = 5 \\ \sin {}^{2} a + 1 = 5sina \\ \sin {}^{2} a - 5 sina + 1 = 0$

Now solve this quadratic equation

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