Answer:
<em>Answer: choice D.</em>
Step-by-step explanation:
<u>Trigonometric Functions</u>
We need to recall some properties and definitions of the trigonometric functions.


We need to simplify the following expression:

Substituting the identity for the secant:

Operating:

Substituting the definition of the tangent:

Correct choice D.
Answer:
12x18
Step-by-step explanation:
3. {6,9,15)
for these u have use Pythagoras theorem
Answer:
It has no value.
Step-by-step explanation:
i think the answer is contionous