Question : If $\sin ^2 \theta-3 \sin \theta+2=0$, then find the value of $\theta\left(0^{\circ} \leq \theta \leq 90^{\circ}\right)$.

Option 1: 45°

Option 2: 0°

Option 3: 60°

Option 4: 90°

Question : A man earns a profit of 20% by selling a calculator for a certain price. If he sells that calculator at double the price, then what will be the profit percentage?

Option 1: 140%

Option 2: 160%

Option 3: 60%

Option 4: 120%