<u>Answer-</u>
2 is the upper limit for the zeros.
<u>Solution-</u>
The given function f(x) is,

For calculating the zeros,










From all the 4 roots, it can be obtained that 2 is the greatest zero.
There is no solution is the answer. I had this in one of my math tests so I'm positive it's correct :D
In the half-angle formula for sine and cosine, notice that a plus/minus sign appears in front of each radical (square root). Whether your answer is positive or negative depends on which quadrant the new angle (the half angle) is in
Answer:
Step-by-step explanation: