Hi there!
First we need to remember the following.

Now substitute both of the formulas.

Work out the parenthesis.

And finally collect terms.

~ Hope this helps you!
Answer:
30
Step-by-step explanation:
hhhhjj+hbggggggggggggggggggggffffffgfgggggggggggg
Answer:
Correct, as 4 is the only number repeating twice
Answer:

Step-by-step explanation:
The length of the trail is obtained by the definition of sine, where height is the opposite leg and length is the hypotenuse:

The length of the trail is:
