Answer: 
Step-by-step explanation:
According to the trigonometric identities we have the following formula:

Now, we have the following:

Where
and 
Hence:


Finally:

90 -720 /8
8 - 64/8
784/8 = 98
Answer:
sure
Step-by-step explanation:
sure
Step-by-step explanation:
Multiply both sides by 9 and you will get

or

Solving for h, we get

Irrational because it’s not a perfect square.