Question : Water has maximum density at

Option 1: 100^oC

Option 2: 0^oC

Option 3: 4^oC

Option 4: 273^oC

Question : tan of complementary of an angle is the same as which of the angles?

Option 1: sin of that angle

Option 2: cot of that angle

Option 3: cos of that angle

Option 4: cosec of that angle

Question : If $\tan \theta+\sin \theta=A$ and $\tan \theta-\sin \theta=B$, then what is the value of $A^2-B^2$?

Option 1: $\tan \theta \sin \theta$

Option 2: $4 \cot \theta$

Option 3: $4 \tan \theta \sin \theta$

Option 4: $2 \tan \theta \sin \theta$

Question : If $\tan(A+B)=\sqrt{3}$, and $\tan(A-B)=\frac{1}{\sqrt{3}}$, $\angle A+\angle B<90°$; $A\geq B$ then $\angle A$ is:

Option 1: 90°

Option 2: 30°

Option 3: 45°

Option 4: 60°

Question : The temperature, which has the same reading on both Fahrenheit and Celsius scales, is

Option 1: 40^o

Option 2: -40^o

Option 3: -34^o

Option 4: -140^o