# Trigonometry Test Review Solutions

1.
a. $\frac{\sqrt{2}}{2}$

b. $\frac{\sqrt{3}}{3}$

c. -1

d. -2

e. -1

2. 45

3. $\frac{-13}{12}$

4. unknown angle is 43 degrees, unknown sides are 18 feet and 13 feet

5. 39

6. The fire is 182.3 miles from station A and 128.7 miles from station B.

# more triangle trigonometry questions

1. Calculate the area of a regular octagon inscribed in a unit circle.
2. In quadrilateral ABCD, AB=3, BC=4, CD=5, and DA=6. The length of diagonal BD is 7. Calculate the length of the other diagonal.
3. From the top of an observation post that is 90 meters high, a ranger sights a campsite at an angle of depression of 10°. Turning in a different direction, the ranger sees another campsite at an angle of depression of 13°. The angle between these two sight lines is 35°. How far apart are the campsites?