Answer:

Step-by-step explanation:
We want to solve
, where
.
We rewrite in terms of sine and cosine.


Use the Pythagorean identity:
.




This is a quadratic equation in
.
By the quadratic formula, we have:




or 
or 
or 
When
, 
on the interval
.
When
,
is not defined because 
Answer:3
Step-by-step explanation:
Answer:
first from the top
Step-by-step explanation:
Answer:
x=46
Step-by-step explanation:
subtract 13 from both sides
x=59-13=46