Precalculus (6th Edition)

Published by Pearson
ISBN 10: 013421742X
ISBN 13: 978-0-13421-742-0

Chapter 5 - Trigonometric Functions - 5.3 Trigonometric Functions Values and Angle Measures - 5.3 Exercises: 55

Answer

$\dfrac {s^{2}}{2}$

Work Step by Step

$A=\dfrac {ab\times\sin \alpha }{2}$ $A=\dfrac {s\times s\times \sin 90^{0}}{2}=\dfrac {s^{2}}{2}$
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