यदि `cos theta =1/2 ` हो, तो `(2 sec theta)/(1+tan ^(2)theta )` का मान ज्ञात करो।

Explanation

दिया है :
`cos theta =1/2impliessec theta =(1)/(cos theta)=2`
`therefore (2 sec theta)/(1+ tan ^(2) theta)=(2 sec theta )/(sec ^(2)theta )=(2)/(sec theta )=(2)/(2)=1`