Answer:

Step-by-step explanation:
The given trigonometric equation is

We take the inverse cosine of both sides to obtain;


Group similar terms t obtain;


Answer:
4 yd
Step-by-step explanation:
On the other side, it's 12 yd, then on the same side as the "?", is 8 yd. Subtract 8 yd from 12 yd and you have the answer of 4 yd
There is one possible outcome for both condition
for first probability of pyramid land on three P(A)=1/4
probability of spinner stops at blue P(B)= 1/3
p(A)+p(B)=1/4+1/3
7/12
18=2(4*x)
divide both sides by 2
9=4*x
move terms
-x=4-9
calculate
-x=-5
change the signs
x=5