5-3 Solving Trigonometric Equations Worksheet With Answers Page 11

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interval [0, 2π) at
 and 
.
Therefore, on the interval [0, 2π) the solutions are
Therefore, the components will be equivalent when
5-3 Solving Trigonometric Equations
,
,
and
.
.
2
2
2
2
Find all solutions of each equation on the
30. 
sec
x tan
x + 3 sec
x – 2 tan
x = 3
interval [0, 2 ).
SOLUTION:  
32. 
+ cos x = 2
SOLUTION:  
 
The square of any real number must be greater than
2
or equal to zero so sec
x = –1 has no solutions.
Therefore, on the interval [0, 2π) the only solutions
are 0 and π.
On the interval [0, 2π), cos x =
 when x =
 and 
31. 
OPTOMETRY Optometrists sometimes join two
when x =
.
oblique or tilted prisms to correct vision. The
resultant refractive power P
of joining two oblique
R
prisms can be calculated by first resolving each
33. 
+
 = –4
prism into its horizontal and vertical components, P
 
H
and P
.
SOLUTION:  
V
Using the equations above, determine for what
values of
 P
and P
are equivalent.
V
H
SOLUTION:  
The sine and cosine have the same values in the
interval [0, 2π) at
 and 
.
On the interval [0, 2π),cos x = –
when x =
Therefore, the components will be equivalent when
.
 and when x =
.
Find all solutions of each equation on the
interval [0, 2 ).
34. 
+
 = cos x
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Page 11
SOLUTION:  
32. 
+ cos x = 2
SOLUTION:  

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