Question : The value of $\tan315°.\cot(-405°)$, is equal to:

Option 1: –1

Option 2: 1

Option 3: 0

Option 4: 2

Question : The value of $\text{cot 17°}(\text{cot 73°} \cos^{2}22°+\frac{1}{\cot 17°\sec^{2}68°})$ is:

Option 1: $0$

Option 2: $1$

Option 3: $2$

Option 4: $\sqrt{3}$

Question : The value of $(1+\sec20°+\cot70°)(1-\operatorname{cosec}20°+\tan70°)$ is equal to:

Option 1: 0

Option 2: 1

Option 3: 2

Option 4: –1

Question : The value of tan 25° tan 35° tan 45° tan 55° tan 65° is:

Option 1: $2$

Option 2: $1$

Option 3: $\sqrt{3}$

Option 4: $0$

Question : The value of $\operatorname{cosec}^{2}60°+\sec^{2}60°– \cot^{2}60°+\tan^{2}30°$ will be:

Option 1: $5$

Option 2: $5\frac{1}{2}$

Option 3: $5\frac{1}{3}$

Option 4: $5\frac{2}{3}$

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