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Triangle Trig HW 12-3A
12-3 A
12-3
Name_________________________ No._____
Pg 531-2/oral 1-15 all
Pg 533/26, 27, 37, 38
Pg 558/12 (2 triangles!)
Pg 560/8
Pg 563/1, 3
Page 531
Give the reference angle  for each angle 
1.
2.
3.
4.
5.   260
6.   175
7.   185
8.   60
9.   350
10.   100
11.   500
12.   400
State the values of the six trigonometric functions of  . If a value is undefined, so state.
13.
14.
15.
Page 533
Give the exact values of the six trigonometric functions of the given angle. Use radicals when
necessary.
26. 300
27. 150
Triangle Trig HW 12-3A
Name_________________________ No._____
37. cos   
12
, 0    180
13
a. Give the quadrant of angle 
3
38. sin    , cos   0
5
a. Give the quadrant of angle 
b. Find the five other trigonometric functions
of  . When radicals occur, leave your answer
in simplest radical form.
b. Find the five other trigonometric functions
of  . When radicals occur, leave your answer
in simplest radical form.
Page 558:
Give lengths to three significant digits and
angle measures to the nearest tenth of a
degree. Solve the triangle. If there are two
solutions, find both. If there are no solutions,
so state:
12. b  15, c  13, C  50 b=15
Page 560:
Given lengths to three significant digits and
angle measures to the nearest tenth of a
degree.
8. A kite 2.5 m long is a quadrilateral having
two sides each 1 m long and two sides each 2
m long. How wide is the kite? (That is, what is
the length of the shorter diagonal?)
Page 563:
Find the areas of the triangles described. Give answers to three significant digits.
1. A  30, B  45, b  20
3. b  4, c  18, A  32