Question

Question #c15b7

Answer 1

`3/2, or. 1.5.`

Explanation:

First of all, we see that, the

Expression`= cos^2(pi/12)+2cos(pi/12)sin(pi/12)+sin^2(pi/12)`

Now, knowing that, `cos^2theta+sin^2theta=1, and,`

`2costhetasintheta=sin(2theta),` we have,

The Exp.`=1+sin(2(pi/12))`

`=1+sin(pi/6)`

`:." The Exp.="1+1/2=3/2=1.5.`

Enjoy Maths.!