If A+B+C=^(^=180) prove that sinA

In any angle ABC prove that the perimeter = a/Sin A(Sin A + Sin B + Sin C)Start with perimeter = a+b+c but b= aSinB/sinA and c=
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2. asked by Anonymous
3. 591 views
Verify/prove the following:(sinA+tanA)/(1+secA) = sinA ______________________________ tanu = 1+sinu-cos^2u/cosu(1+sinu)
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2. asked by Kid
3. 794 views
Prove that [sinA/(1-cosA)-(1-cosA)/sinA]*[cosA/(1+sinA)+(1+sinA)/cosA]=4cosecAI the second part as 2 secA
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2. asked by Agastya
3. 789 views
Please help with this one. I've worked it out in so many ways and can't tell what's correct.sinA sinA ----- - ------ 1+sinA
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2. asked by Jasmine
3. 759 views
Hi, can someone give me the answer to this question:secA-tanA=1/4. Find cosA I got: CosA=4(1-sinA) Is my answer good? Now
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2. asked by Shym
3. 997 views
CosA/1+sinA=1-sinA/cosAI have to prove the identity each side has to b the same how would i do that? I have a unit test on
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2. asked by Kristien
3. 669 views
IfA=340°, prove that2cosA/2 = -(v1+sinA) - (v1-sinA)
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2. asked by Kewal
3. 597 views
IfA=340°, prove that2sinA/2 = -(v1+sinA) + (v1-sinA)
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2. asked by Kewal
3. 989 views
Cos^2A/sinA-cosecA+sinA=0Prove lHS =RHS
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2. asked by Sneha
3. 1,566 views
i have a problem in dis sum from complex numbersprove that (1+sinA+icosA)/(1-sinA-icosA)=i(secA+tanA)
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2. asked by sonia
3. 649 views