Answer
a). $87m$,
b). $100m$.
Work Step by Step
a). height of the building = $50tan60^{\circ}=87m$
b). required distance = $\sqrt (50^{2}+87^{2})=100m$
College Physics (7th Edition)
by Wilson, Jerry D.; Buffa, Anthony J.; Lou, Bo
Published by
Pearson
ISBN 10:
0-32160-183-1
ISBN 13:
978-0-32160-183-4
Appendix I - D Trigonometric Relationships - Law of Sines - Appendix I-D Exercises on Trigonometry - Page A-5: 1
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