Question

If $\theta$ increases from $0^{\circ }to$ ${90}^{\circ }$ then the value of $cos\theta$

• A. decreases
• B. increases
• C. neither increases or decreases
• D. none of these

Answer 1

The correct option is A decreases

Graph of $\cos x$ is shown in red line

we can clearly visualize from the graph that

Value of cos$\theta$ is decreasing from $0$ to $\frac{\pi }{2}$