Question

3. In a triangle ABC, D is any point on
side BC such that BD:DC is 5:7.
Perpendiculars from point D are
drawn on sides AB and AC at point E
and F respectively such that DE =
10cm and DF = 21cm. Find the ratio
of sides AB and AC.​

Answer 1

Answer:

Rs Aggarwal 2018 Solutions for Class 10 Math Chapter 4 Triangles are provided here with simple step-by-step explanations.

Answer 2

Answer:

3:2

Step-by-step explanation:

Area of triangle ABD : Area of triangle ACD = BD : CD

Area of triangle ABD : Area of triangle ACD = 5 : 7

1/2 * AB * 10 : 1/2 * AC * 21 = 5 : 7

AB : AC = 3 : 2