Solve the problem.
1) A radio transmission tower is 150 feet tall. How long should a guy wire be if it is to be attached 5 feet from the top and is to make an angle of 20° with the ground? Give your answer to the nearest tenth of a foot.
2. A straight trail with a uniform inclination of 11° leads from a lodge at an elevation of 600 feet to a mountain lake at an elevation of 9000 feet. What is the length of the trail (to the nearest foot)?
3. Find the amplitude.
y = -2 cos(3Δx - 3)
4. Find the period
y = -5 sin ((1/2)x -Δ/2 period
note:
Every triangle symbol is pie i.e 22/7 or 3.714