Now let us set up a triangle that represents the angle .
We see that the opposite leg has a value of x, and the adjacent has a value of 1. Thus, the value of the hypotenuse can be found after applying the Pythagorean formula:
Now, let us evaluate the expression:
can be determined from the triangle we constructed.
Substitute this into the equation and simplify:
I'll leave the rest for you to do.
I hope this makes sense!