Answer:
16
Step-by-step explanation:
Answer:
the answer for 12 would be 63
Step-by-step explanation:
7 x 9 x 1
By the angle difference formula for sines, we have:

By the angle sum formula for tangents, we have:

.
Rationalizing the denominator gives

as the final answer.
Answer:
The solution to the inequality is 0.