Flag Trigonometry> IF A+B+C=180A+B+C=180,prove that coscos A/sinBA/sinB sinCsinC ++ co
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IF A+B+C=180A+B+C=180,prove that coscos A/sinBA/sinB sinCsinC ++ cosB/sinCcosB/sinC sinAsinA ++ cosC/sinAcosC/sinA sin B=2B=2

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Anvith Reddy Nagulapally , 6 Years ago
Grade 12th pass
anser 1 Answer
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Arun

Last Activity: 6 Years ago

Dear student
sin A cosA + sinB cosB + sinc cos C / sinA sinB sinC
sin 2A + sin 2B + sin2C / 2 sinA sinB sinC
but for a triangle
SIn 2A + sin 2B + sin2C = 4 sinA sinB sinC
hence its answer will be = 4/2 = 2

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