Make the given changes in the indicated examples of this section and then solve the resulting problems.
Question:
Make the given changes in the indicated examples of this section and then solve the resulting problems.
In Example 2, add 40° to each angle, express in terms of the same function of a positive acute angle, and then evaluate.
Data from Example 2
Transcribed Image Text:
same function determines quadrant sin 160° tan 110° = -tan (180° - 110°) = cos 225º = -cos (225° - 180°) = cot 260° +cot (260° - 180°) = sec 304° sec 56° 1.788 +sec (360° - 304°) = sin 357° = -sin (360° - 357°) = -sin 3°= -0.0523 proper sign for function in quadrant +sin (180° - 160°) = reference angle sin 20° = 0.3420 -tan 70° = -2.747 -cos 45º = -0.7071 cot 80° 0.1763 = =
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Related Book For
Basic Technical Mathematics
ISBN: 9780137529896
12th Edition
Authors: Allyn J. Washington, Richard Evans
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