Q1. Choose the correct option.
Q2. Write down short answers of following questions.
Q3. Write detailed answers of the following questions. (Answer any 2) (2×5=10)
1. Right Triangle Verification
Show that the points P(4, -1, 2), Q(1, 3, -1) and R(-2, 4, 6) form a right triangle.
2. Trigonometric Identity
Prove that: sin(α – β) = sin α cos β – cos α sin β
3. Work Done Calculation
A particle is displaced from (1, 2, 3) to (4, -1, 2) under force F = 2i + 3j – k. Find the work done.