Answer: z = −36
Step-by-step explanation:
Step 1: Simplify both sides of the equation.
-12 = 1/3z
Step 2: Flip the equation.
1/3x = -12
Step 3: Multiply both sides by 3.
3* (1/3z) = (3) * (-12)
Answer:
:)
Step-by-step explanation:
For simplicity I will substitue
for β.

In the first step I used the identity
And I factored out 
Then it's just simple algebra to cancel till the 3rd step where we used another identity derived from the Pythagorean Theorem.

That's it!
Why yes it is, good question
Answer:
D
Step-by-step explanation: