Question

A boy is flying a kite at a height of 40 m from the ground, attached to a string inclined at 30° to the horizontal. Find the length of the string.

Answer 1

Given:

Height of kite from ground = 40 m

String makes an angle of 30° with the horizontal

Finding Length of the string

Step 1: Use sine function

= sin(30°) = `"Height"/"Length of string"`

= `1/2 = 40/"Length of string"`

= Length of string = 40 × 2

= 80 m