Trigonometry (10th Edition)

Published by Pearson
ISBN 10: 0321671775
ISBN 13: 978-0-32167-177-6

Chapter 1 - Trigonometric Functions - Section 1.3 Trigonometric Functions - 1.3 Exercises: 104


The tangent and cotangent of complementary angles are equal.

Work Step by Step

1. Set up calculator in degrees $\tan15^{\circ}\approx0.2679$ $\cot75^{\circ}\approx0.2679$ 2. Pick up more examples $\tan10^{\circ}=cot80^{\circ}\approx0.1763$ $\tan53^{\circ}=cot37^{\circ}\approx1.327$
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