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प्रश्न
In the following triangle, find the value of x
उत्तर
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°
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