Question

Question 4 (iii)
State whether the following are true or false. Justify your answer.
(iii) The value of cos $\theta$ increases as $\theta$ increases.

Answer 1

(iii) False.
$cos{0}^{\circ }=1$
$cos{30}^{\circ }=\frac{\sqrt{3}}{2}$
$cos{45}^{\circ }=\frac{1}{\sqrt{2}}$
$cos{60}^{\circ }=\frac{1}{2}$
$cos{90}^{\circ }=0$
Thus, the value of cos $\theta$ decreases as $\theta$ increases.