Not sure why such an old question is showing up on my feed...
Anyway, let

and

. Then we want to find the exact value of

.
Use the angle difference identity:

and right away we find

. By the Pythagorean theorem, we also find

. (Actually, this could potentially be negative, but let's assume all angles are in the first quadrant for convenience.)
Meanwhile, if

, then (by Pythagorean theorem)

, so

. And from this,

.
So,
Answer:
8:35
Step-by-step explanation:
7:45 + 50minutes=
8:35
Answer: option c
Step-by-step explanation: with a two-tailed hypothesis she can find the way to go deep on the study, she will be able to increase the statistical power. She will be able to separate in specifics groups.
Answer:
2
3
–
3
4
=
– 1
12
Step-by-step explanation: is this the answer?
Answer:
14
Step-by-step explanation:
6(2)
12
4÷2
2
12+2
pemdas