Download Name: HW 9-4 1) What is the exact value of cos 15D? 2) What is the

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Name: ____________________________________________
HW 9-4
1)
What is the exact value of cos 15D?
2)
What is the exact value of cos 105D?
3)
4)
5)
6)
What is the exact value of
cos 25D cos 5D * sin 25D sin 5D?
7)
What is the exact value of
cos 75D cos 15D + sin 75D sin 15D?
8)
What is the exact value of
cos 53D cos 8D + sin 53D sin 8D?
9)
The expression
What is the exact value of sin 165D?
What is the exact value of sin 75D?
What is a complex expression that
represents the exact value of tan 15D?
equivalent to
A) cos x d tan x
B) csc x
C) sin x d cos x d tan x
D) sec x
is
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10)
The expression
+ cos B is
14)
Solve the equation
tan2 t * 3 sec t + 3 = 0 for the interval
0 < t < 360D.
15)
Find all values of f in the interval
0D < t < 360D that satisfy the equation
2 sin t * 1 = csc t.
16)
If x is a positive acute angle, solve
equivalent to
11)
A)
C)
B) 1
D) sin2 B
The expression sec2 t + csc 2 t is
equivalent to
A) sin2 t cos 2 t
B)
C) 1 + tan2 t
D) 1 * tan2 t
12)
13)
The expression (1 + cos x)(1 * cos x) is
equivalent to
A) csc2 x
C) 1
B) sec 2 x
D) sin2 x
What is
=
to the nearest
degree.
expressed as a
single trigonometric function?
17)
Solve for t where 0 < t < 2p:
sin2 t = sin t