Question

If cos theta= cos π/10 then theta =?​

Answer 1

Answer:-

$\\ \tt\bull\rightarrowtail \cos( \theta) = cos( \frac{ \pi}{10} )\\ \\ \tt\bull\rightarrowtail \cos( \theta) = \cos( \frac{ 3.14 }{10} ) \\ \\ \tt\bull\rightarrowtail \cos( \theta )= \cos(0.314) \\ \\ \tt\bull\rightarrowtail \theta = 0.314$

Note:-

You can take value of π=22/7

Then

Value of $\sf \theta=\dfrac{22}{70}$