Prove: $\frac{\sin 5A}{\sin A} - \frac{\cos 5A}{\cos A} = 4 \cos 2A$.

Prove: $\frac{\sin 3A}{\sin A} - \frac{\cos 3A}{\cos A} = 2$.

उज्यालो यात्रा कविताको सुरुका दुईओटा श्लोकको आशय वर्णन गर्नुहोस् ।

Write the name of the compound formed when ammonia dissolves in water.

What is the name of the blood vessel that carries blood from heart to different parts of the body?

The length of shadows of Rakesh and Muhammed are found to be in the ratio of 3:4 at the same time of the day. What could be the possible heights of Rakesh and Muhammed?

If a coin is tossed n times, what is its sample space?

Which of the following statistical methods is not a measure of central tendency?

If \( \rm x + \frac{1}{x} = 2 \), what is the value of \( \rm x^{100} + \frac{1}{x^{100}} \)?

How many terms must be taken of the series 3+6+12+..., to make the sum 1533?