Answer
$\tan 143.4^{\circ}$ = - 0.7427
Work Step by Step
Using calculator in degree mode-
143.4 → $\tan$
$\tan 143.4^{\circ}$ = - 0.7426655415
Rounding it to four places past the decimal point-
$\tan 143.4^{\circ}$ = - 0.7427
Trigonometry 7th Edition
by McKeague, Charles P.; Turner, Mark D.
Published by
Cengage Learning
ISBN 10:
1111826854
ISBN 13:
978-1-11182-685-7
Chapter 3 - Section 3.1 - Reference Angle - 3.1 Problem Set - Page 122: 37
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