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Unit 6, Activity 5, Working with
the Properties and Formulas for the
Trigonometric Functions with Answers
Blackline Masters, Advanced
Math

PreCalculus
Page
Louisiana Comprehensive Curriculum, Revised 2008
200
b)
⎟
⎠
⎞
⎜
⎝
⎛
−
3
1
2
sin
1
Sin
Let A =
sin
−
1
1
3
then sin 2
A
= 2sin
A
cos
A
. Set up a right triangle with side opposite
A = 1 and the hypotenuse = 3. Find cos
A
sin2
2
1
3
22
3
42
9
A
=
F
H
G
I
K
J
F
H
G
I
K
J
=
c)
⎟
⎟
⎠
⎞
⎜
⎜
⎝
⎛
⎟
⎠
⎞
⎜
⎝
⎛
−
+
−
−
4
1
4
1
cos
1
1
Sin
Cos
Follow the same procedure as in 4(a). Use the sum formula
cos(
A + B
) = cos
A
cos
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This note was uploaded on 10/10/2011 for the course MAC 1147 taught by Professor German during the Fall '08 term at University of Florida.
 Fall '08
 GERMAN
 Calculus, PreCalculus, Formulas

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