Final Review
Calculators may be used.
Use a calculator to find the function value to four decimal
places.
1) csc 5145'37'
11) From a balloon 822 feet high, the angle of
depression to the ranger headquarters is 651'.
How far is the headquarters from a poin
Test 4 Practice problems
Solve, finding all solutions in degrees.
1) 2 cos x tan x + 3 tan x = 0
Answer: 0, ,
5 7
,
6 6
2) sin2 x - cos2 x = 0
Answer:
3 5 7
,
,
,
4 4 4
4
3) 2 sin 2 x = sin x
Answer: 0, ,
5
,
6 6
Solve, finding all solutions in radians.
Practice Problems
No Calculator
Find the requested function value of .
39
5
1) If sin =
, cos = , and tan =
8
8
Math 1112
16) cot 240 =
39
,
5
17) tan 300 =
then find csc , sec , and cot .
18) cos 135 =
2) Given that sin 40 = 0.6428 and cos 40 =
0.7660, t