Answer:
16
Step-by-step explanation:
6 to the power of 2 is 36 -4 = 32 divided by 2 is 16 and there is your answer 16
Answer:
.
Reference angle is 
Step-by-step explanation:
Given the value of x. we have to find the correct value of cosx.

Now, we have to find the exact value of 



Now, we have to find the reference angle of
.
Since the angle
lies in second quadrant, the reference angle formula is
Reference angle=
.
=
ANSWER

EXPLANATION
The given equation is

Take antilogarithm of both sides to base e.

This will simplify to

Group like terms to obtain,


Take square root of both sides to get,