Question

find the height of equilateral triangle whose side is 15 cm​

Answer 1

Step-by-step explanation:

It may be help you......

Answer 2

Answer:

10.60 cm

Step-by-step explanation:

Draw a line representing the height of the triangle.

This will be perpendicular to the base line of the triangle which is a property of equilateral triangle.

Now we have to find the perpendicular height of a right angle triangle whose one side is known and one angle is known.

Use trigonometry to solve it.

sin 60° = Height / Hypotenuse

1/√2 = Height / 15

Cross multiply to get the answer.

i.e. Height = 15/√2 = 10.60 cm