Ex 7.1 Examples | Distance formula

The formula d = rt is called the distance formula. In this formula, drepresents the distance traveled, r represents the rate of speed, and t represents the time traveled. If a person travels 90 miles in 2 1/2 hours, what is the value of r?

Prove by using the distance formula that the points A (1,2,3), B (-1, -1, -1) and C (3,5,7) are collinear.

Prove by using distance formula that the points P(1,2,3),Q(-1,-1,-1)a n dR(3,5,7) are collinear.

Without using the distance formula, show that the points A (4, 5), B (1, 2), C (4, 3) and D (7, 6) are the vertices of a parallelogram.

Class 10 Maths Ex 9.1 examples (Part 2) Ch 9 Some Applications of Trigonometry (Heights & Distances)

Use the distance formula to show that the points A(1, -1), B (6,4) and C(4,2) are colinear.

Without using distance formula, show that points (-2,-1) , (4,0) , (3,3) and (-3,2) are the vertices of a parallelogram.

Without using distance formula, show that points (-2, -1), (4, 0) , (3, 3) , and (-3, 2) are the vertices of a parallelogram.

Use distance formula to show that the points (cosec^2 theta, 0), (0, sec^2 theta) and (1, 1) are collinear.

For a frequency distribution 7th decile is computed by the formula