State for any acute angle θ whether :

sin θ increases or decreases as θ increases.

State for any acute angle θ whether :

cos θ increases or decreases as θ increases.

If A = 30°, then $\dfrac{\text{sin 2 A}}{\text{1 - cos 2 A}}$ is equal to :

1. cot A

2. tan A

3. sec A

4. cosec A

If A = 60° and B = 30°; the value of sin A cos B + cos A sin B is equal to :

1. $\dfrac{1}{2}$

2. 1

3. 2

4. ${\sqrt2}$