Question

if
${x}^{2} + \frac{1}{ {x}^{2} } = 6$ find the value of
${x}^{4} + \frac{1}{ {x}^{4} }$
​

Answer 1

Answer:

ANSWER

Given,

cos −1

1+9x

2

6x

=

−

2

π

+

2tan

−1