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प्रश्न
The angles of the triangle are 3x – 40, x + 20 and 2x – 10 then the value of x is
विकल्प
40°
35°
50°
45°
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उत्तर
35°
Explanation;
Hint:
3x – 40 + x + 20 + 2x – 10 = 180° ...(Sum of the angles of a triangle is 180°)
6x – 30 = 180°
6x = 180° + 30°
x = `(210^circ)/(6^circ)`
= 35°
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