Find the value of x in the given triangle?

20 °

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25 °

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35 °

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30 °

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Solution

The correct option is A $20 °$
$G i v e n a n g l e s a r e 4 x, 2 x & 3 x I f t h e s e a n g l e s f o l l o w a n g l e s u m p r o p e r t y c r i t e r i a o f t h e t r i a n g l e t h e n t h e y c a n f o r m a t r i a n g l e . A d d i n g a l l t h e a n g l e s a n d e q u a t i n g t o 180 ° 4 x + 2 x + 3 x = 180 ° 9 x = 180 ° x = 20 °$

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