MATHI 500 PreCalculus Test 4 Page 3 of 7
3) A forest ranger is standing in an observation tower and spots a re burning. If the ranger is 80 feet
above the ground and measures the angle of depression to the re at 6°.
Find the distance to the re from the ba
MATHISOO PreCalculus Test 4 Page 1 {i1
1) USE the given information to determine the remaining parts of the triangle(s) if they exist. Give
answers to two decimal places. Circle YES / NO to show if one, none or two triangles exist. Find
the area of the rs
MATHISOO PreCalculus Test 3 Spring 2014
1) Write a function for the given graph. P6 no of w
9
Answer: y: 3005 360% EX
2) Consider the function y = 4 sin (4x - :3
a) Find the amplitude: bf /
- %
b) Find the Period: Z.
. T7
c) Find the Phase Shift: X
MATHISOO PreCalculus Test 3 Spring 2014 Page 5 of 5
8) Solve 2 sin(26) 1 = 0 on the'interval 0 S 6 < 21:.
-f'J ' ,3
7 9: . V TRIGONOMETRIC IDENTITIES
Fundamental identities (Quotient and Reciprocal Identities)
t 6_sini9 t6_c059 9
MATHISOO Pre-Calculus Test 4 Page 7 of 7
8) Perform the given operations and given your answer in polar form with a positive angle between 0°
and 360° given 2 z 6(cos 240° + i sin 240°) andw = 2(cos 130° + 1' sin 130°)
3) z-w: lHCcoswo") + C(S?m it)
6-2