Trigonometric Identities Worksheet With Answers Page 7
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25Since
is in the first quadrant,
is positive.
13-1 Trigonometric Identities
Thus,
.
12. If tan θ = 2, find sec θ.
SOLUTION:
Since
is in the first quadrant,
is positive.
Thus,
.
Find the exact value of each expression 180 ° < θ < 270 °
13. If
, find csc θ.
SOLUTION:
Since θ is in the third quadrant,
is negative.
Therefore,
.
14. If
, find tan θ.
SOLUTION:
Since θ is in the third quadrant,
is positive.
Therefore,
.
15. If
, find csc θ.
SOLUTION:
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