Math, asked by Coolprayas, 1 year ago

Hey guys ... Can you solve it ??

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Answered by nellijames2003

area of the triangle is equals to half Times product of two sides and and sine of angle between them
here have into 20 x 20 x sin 30

Anonymous: 1/2 *20*20*sin (30°) = 100

Anonymous: 100cm^2

Ree2910: check my answer....you should have done 1/2×20×20×sin30

Ree2910: Red ink is only for reference.Do not write those.Rewrite the blue part to understand it better.
Many people may say that the problem can be solved only by the help of trigonometry.But it can also be easily and logically solved in the following way.

Ree2910: check my answer....you should have done 1/2×20×20×sin30

Anonymous: Yes , but this we all know , it is proof of this identity.

Ree2910: yes...but it has a logical and easy explaination

Anonymous: You can make it easy in other ways too .

Anonymous: There are other proofs which is shorter or more logical.

Answered by Ree2910

Red ink is only for reference.Do not write those.Rewrite the blue part to understand it better.
Many people may say that the problem can be solved only by the help of trigonometry.But it can also be easily and logically solved in the following way.

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Ree2910: good question

Coolprayas: Hmm ...

Coolprayas: Thnx a lot ....

Coolprayas: Sorry .... Its late ...

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