-2 negative 2 is the answer
Answer:

Step-by-step explanation:
We are given that:

Where <em>A</em> is in QI.
And we want to find sec(A).
Recall that cosecant is the ratio of the hypotenuse to the opposite side. So, find the adjacent side using the Pythagorean Theorem:

So, with respect to <em>A</em>, our adjacent side is 63, our opposite side is 16, and our hypotenuse is 65.
Since <em>A</em> is in QI, all of our trigonometric ratios will be positive.
Secant is the ratio of the hypotenuse to the adjacent. Hence:

Subsitute
2a-16=b=a+2
2a-16=a+2
subtract a from boths ides
a-16=2
add 16
a=18
The answer to the question is b
Answer:
4
Step-by-step explanation:
12 is over 10 and 8