Please solve the math question

Pleasetellmethesolutionofthefollowingquestion:InABC,DisthemidpointofsideBC.ACB=30.ADB=45FindBAD.Please\quad tell\quad me\quad the\quad solution\quad of\quad the\quad \\ following\quad question:\\ \\ In\quad \triangle ABC,\quad D\quad is\quad the\quad midpoint\quad of\quad \\ side\quad BC.\quad \angle ACB\quad =\quad { 30 }^{ \circ }.\quad \angle ADB\quad =\quad 45\\ Find\quad \angle BAD.\quad I know how to solve it using trigo. But tell me a different method. P.S it's an eighth class question.

Note by Rajdeep Dhingra
4 years, 9 months ago

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1 vote

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DO YOU WANT FULL SOLUTION OR JUST HINT , IF HINT , THEN TRY BY CONSTRUCTION.

ashay wakode - 4 years, 9 months ago

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What's your answer, is it 120 ?

Shivam Hinduja - 4 years, 9 months ago

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No,it's 30.

ashay wakode - 4 years, 9 months ago

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@Ashay Wakode Your answer is correct

Rajdeep Dhingra - 4 years, 9 months ago

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FULL SOLUTION

Rajdeep Dhingra - 4 years, 9 months ago

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@ashay wakode Please help

Rajdeep Dhingra - 4 years, 9 months ago

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I believe that this is an NMTC problem. You can view the solution discusssion in this problem. One approach just uses sine rule, while another approach gets more creative.

Calvin Lin Staff - 4 years, 9 months ago

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