Answer:
Cosine
Step-by-step explanation:
Cosine = 
Cos 70 = 
0.633 = 
0.633 x 8 =
x 8
5.064 = x
A and D i think.(sry this needed to be 20 characters long)
Answer:

Step-by-step explanation:
We want to write the trignometric expression:

As an algebraic equation.
First, we can focus on the inner expression. Let θ equal the expression:

Take the secant of both sides:

Since secant is the ratio of the hypotenuse side to the adjacent side, this means that the opposite side is:

By substitutition:

Using an double-angle identity:

We know that the opposite side is √(u² -100), the adjacent side is 10, and the hypotenuse is u. Therefore:

Simplify. Therefore:

Point slope formula: y-y1=m(x-x1). Answer: y-7=6(x-(-4))