Class-7 Ratio & Proportion Part-1

Find the angel between the vectors with direction ratios proportional to 1, -2, 1 and 4, 3, 2.

Check whether the given two ratios form a proportion or not: 3 (1)/(2) : 2 (1)/(2) and 21: 15

Find the angle between the vectors with direction ratios proportional to 1,-2,1 and 4,3, 2.

Are the ratio in proportion ? 60:88 and 180:264

Find the angle between the pairs of lines with direction ratio proportional to: 1, 2, -2, and -2, 2, 1

Write the inclination of a line with Z-axis, if its direction ratios are proportional to 0, 1, -1.

If a line has direction ratios proportional to 2, -1, -2, then what are its direction cosines?

Find the acute angle between the lines whose direction ratios are proportional to 2:3:6 and 1:2: 2.

Class- 7 Math profit and loss

The projection of the line segment joining the points A(-1,0,3) and B(2,5,1) on the line whose direction ratios are proportional to 6,2,3 is