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prove tanA+tanB=sin(A+B)/cosAcosB

  1. prove:sin(a+b)/cosacosb=tana+tanb
    1. answers icon 1 answer
    2. Sarah Fuller asked by Sarah Fuller
    3. views icon 1,956 views
  2. prove tanA+tanB=sin(A+B)/cosAcosB
    1. answers icon 2 answers
    2. Anonymous asked by Anonymous
    3. views icon 706 views
  3. prove sin(A+B)/sin(A-B)=(tanA+tanB)/(tanA-tanB)
    1. answers icon 2 answers
    2. Anonymous asked by Anonymous
    3. views icon 6,350 views
  4. 1 .If tanA=1/3 and tanB=1/7 (both A and B are acute),calculate 50sin(2A +B)2.1Prove that sin2A+2cosA-2cos^3A/1+sinA =sin2A 2.2
    1. answers icon 5 answers
    2. tshepo asked by tshepo
    3. views icon 1,006 views
  5. 1 .If tanA=1/3 and tanB=1/7 (both A and B are acute),calculate 50sin(2A +B)2.1Prove that sin2A+2cosA-2cos^3A/1+sinA =sin2A 2.2
    1. answers icon 1 answer
    2. OwamIII asked by OwamIII
    3. views icon 670 views
  6. Prove: 1+(TanA/SinB)^2/1+(TanA/SinC)^2 = 1+(SinA/TanB)^2/1+(SinA/TanC)^2
    1. answers icon 4 answers
    2. Rabin asked by Rabin
    3. views icon 3,750 views
  7. if tanA/tanB=k,prove that k+1/k-1=sin(A+B)/sin(A+B)
    1. answers icon 1 answer
    2. Shruti raut asked by Shruti raut
    3. views icon 311 views
  8. If TanA=k.TanB prove that (k+1)sin(A-B)=(k-1)sin(A+B).
    1. answers icon 10 answers
    2. Gunda asked by Gunda
    3. views icon 5,551 views
  9. If 1/sinA+1/cosA =1/sinB+1/cosB, prove that: cot(A/2+B/2) = TanA. TanB
    1. answers icon 1 answer
    2. Rabin asked by Rabin
    3. views icon 1,659 views
  10. If 1/sinA-1/cosA=-1/sinB-1/cosB , prove that cot⁡((A+B)/2)=tanA.tanB
    1. answers icon 0 answers
    2. Kishun asked by Kishun
    3. views icon 225 views