Chapter 5 - Trigonometric Functions - 5.3 Trigonometric Functions Values and Angle Measures - 5.3 Exercises - Page 532: 52

$a=12;$ $b=12\sqrt {3}$ $c=12\sqrt {6};$ $d=c=12\sqrt {6}$

$a=24\times \cos 60^{0}=24\times \dfrac {1}{2}=12;$ $b=24\times \sin 60^{0}=12\sqrt {3}$ $c=\dfrac {b}{\cos 45}=\dfrac {12\sqrt {3}}{\dfrac {\sqrt {2}}{2}}=12\sqrt {6};$ $d=c=12\sqrt {6}$