## Trigonometry (11th Edition) Clone

$\angle CAB \ne \angle BAD$
Angle of depression is $\angle BAD$ and $AD||CB$ then, $\angle CAD = 180^{\circ} -\angle ACB = 90^{\circ}$ $\angle CAD = \angle BAD + \angle CAB$ $\angle CAB = \angle CAD - \angle BAD$ $\angle CAB = 90^{\circ} - angle$ $of$ $depression$ therefore $\angle CAB \ne \angle BAD$