Recall the fundamental rule of trig:

So, there exists an angle
such that

if and only if

Working out the numbers, we get

So, there doesn't exist a number
such that

Answer:
second answer should be corr3ect tell em if wrong
Step-by-step explanation:
Answer: 11 1/9
Step-by-step explanation:
Answer:
4 x 63 = 252
Step-by-step explanation:
There's 4 groups of 63 students.