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Prove sinA/1+cosA =tan1/2A

  1. Prove sinA/1+cosA =tan1/2A
    1. answers icon 1 answer
    2. Riley asked by Riley
    3. views icon 502 views
  2. 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. Agastya asked by Agastya
    3. views icon 784 views
  3. 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
    1. answers icon 2 answers
    2. Shym asked by Shym
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  4. 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
    1. answers icon 5 answers
    2. Kristien asked by Kristien
    3. views icon 663 views
  5. Hello I am having trouble with proving this:sinA/secA+secA/cscA = tan(A)(2-sin^2(A)) So far I've gotten SinA/(1/cosA) +
    1. answers icon 1 answer
    2. Jimbo asked by Jimbo
    3. views icon 846 views
  6. prove thatsinA-cosA+1/sinA+cosA-1=1/secA-tanA
    1. answers icon 1 answer
    2. meenal asked by meenal
    3. views icon 866 views
  7. prove that :cosA-sinA+1/cosA+sinA-1=cosecA+cotA
    1. answers icon 2 answers
    2. rajan asked by rajan
    3. views icon 768 views
  8. Prove :1 + Sin2A/ Cos2A = CosA + SinA / CosA- SinA
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    2. clive asked by clive
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  9. Let P=(cosA sinA)(sinA cosA) Q=(cosB sinA) (sinB cosA) show that PQ=(cosA(A-B) sin(A B)) (sinA(A B) cos(A-B))
    1. answers icon 0 answers
    2. James asked by James
    3. views icon 765 views
  10. x×sin^3A=y , cos^3A = sinA × cosA , x×sinA= y×cosA , then prove that x^2+ y^2= 1I have no idea
    1. answers icon 2 answers
    2. Venkatesh asked by Venkatesh
    3. views icon 1,006 views