Question

In the following triangle, find the value of x

Answer 1

Let ∠S = 3x°

Given `bar("RS")` = Given `bar("RT")` = 4.5 cm

Given ∠S = ∠T = 3x°  ...[∵ Angles opposite to equal sides are equal]

By angle sum property of a triangle we have,

∠R + ∠S + ∠T = 180°

72° + 3x + 3x = 180°

72° + 6x = 180°

x = `(108^circ)/6`

x = 18°