CBSE Class 9 Answered

In the given figure

Asked by seeni2005 | 30 Jul, 2018, 07:19: PM

Expert Answer

begin mathsize 16px style AB space divides space angle DAC space in space the space ratio space 1 colon 3. Let space angles space be space straight x space and space 3 straight x. According space to space the space question comma straight x space plus space 3 straight x space plus space 108 degree equals 180 degree 4 straight x equals 72 degree straight x equals 18 degree equals angle DAB 3 straight x equals angle BAC equals 54 degree........ left parenthesis straight i right parenthesis AB equals DB angle DAB equals angle ABD equals 18 degree In space triangle ABD comma angle ABC equals angle DAB plus angle ABD equals 36 degree........ left parenthesis ii right parenthesis In space triangle ABC comma 36 degree plus 54 degree plus angle ACB equals 180 degree angle ACB equals straight y equals 90 degree end style

Answered by Sneha shidid | 31 Jul, 2018, 09:54: AM

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In the given figure

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ANSWERED BY EXPERT