Question : What is the average temperature of Chennai in the cold season?

Option 1: 20° - 21° Celsius

Option 2: 32° - 33° Celsius

Option 3: 24° - 25° Celsius

Option 4: 29° - 30° Celsius

Question : The value of $2\tan^2 45° + \cos^2 30° - \sin^2 60°$ is:

Option 1: 2

Option 2: 1

Option 3: –1

Option 4: –2

Question : If $\sec(7\theta+28°)= \operatorname{cosec} (30°-3\theta)$. Then, the value of $\theta$ is:

Option 1: 8°

Option 2: 5°

Option 3: 60°

Option 4: 9°

Question : In an isosceles triangle PQR, $\angle$P = 130°, If I is the in-centre of the triangle, what is the value of $\angle$QIR?

Option 1: 130°

Option 2: 120°

Option 3: 155°

Option 4: 165°

Question : In a triangle$\frac{AB}{AC}=\frac{BD}{DC}$, $\angle$B = 70° and $\angle$C = 50°, then $\angle$BAD =?

Option 1: 60°

Option 2: 20°

Option 3: 30°

Option 4: 50°