Question : Find the value of the given expression.
2 + cos 49°cos 41° – sin 49° sin 41°

Option 1: 2

Option 2: –1

Option 3: 0

Option 4: 1

Question : Evaluate the following.
$\sin 25° \sin 65° – \cos 25° \cos 65°$

Option 1: 4

Option 2: 1

Option 3: 0

Option 4: 40

Question : The value of $\frac{\sin A}{1+\cos A}+\frac{\sin A}{1-\cos A}$ is $(0°<A<90°)$:

Option 1: $2\operatorname{cosec}A$

Option 2: $2 \sec A$

Option 3: $2 \sin A$

Option 4: $2 \cos A$

Question : What is the value of $\frac{\cos 37^{\circ}}{\sin 53^{\circ}}?$

Option 1: $ \frac{1}{2} $

Option 2: $\frac{1}{\sqrt{2}}$

Option 3: $0$

Option 4: $1$

Question : For any acute angle $\theta, \sin \theta+\sin^2 \theta=1$, then the value of $\cos^2 \theta+\cos^4 \theta=$___________.

Option 1: 0

Option 2: 1

Option 3: 2

Option 4: –1