Trigonometric Identities Worksheet With Answers Page 10
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2513-1 Trigonometric Identities
20. If
, find cos θ.
SOLUTION:
Since θ is in the fourth quadrant,
is positive.
Therefore,
.
Simplify each expression
21.
SOLUTION:
22.
SOLUTION:
23.
SOLUTION:
24.
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SOLUTION:
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