I think the answer is D but im not sure
Trigonometric Ratios
A right triangle is defined as a triangle that has one interior angle with a measure of 90°.
The trigonometric ratios are defined as relationships between sides and angles on right triangles.
To better explain the required ratio, we'll include the following image that contains the given triangle, as described in the question:
The cosine of the angle T (shown in the figure) is defined as:

The secant of an angle is the reciprocal of the cosine, thus:

The adjacent side to angle T is 77 and the hypotenuse is 85, thus:
Answer:
To practice for a competition, Jasmine swam in those 4 weeks a total of 
Step-by-step explanation:
Hi
First of all, we need to determine how many days did Jasmine went to the pool in total, so if we have
, and if She has been going for 4 weeks, therefore
.
Then we use Jasmine's rate of practice
.
So
or
is the total distance swam by Jasmine in the four weeks.
OMIGOSH!! I have this same book, ok I'm past this chapter so. Tell me the page and I'll refresh my memory to help.