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Prove that sin3A+sin2A-sinA = 4sinAcosA/2cos3A/2

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  1. Prove thatsin3A+sin2A-sinA = 4sinAcosA/2cos3A/2
    1. answers icon 1 answer
    2. Kewal asked by Kewal
    3. views icon 898 views
  2. 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 658 views
  3. 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 984 views
  4. If A + B + C = π, prove that: ( sin2A + sin2B + sin2C ) / ( sinA + sinB + sinC ) = 8 sin(A/2) sin(B/2) sin(C/2)
    1. answers icon 2 answers
    2. manish asked by manish
    3. views icon 908 views
  5. Prove :1 + Sin2A/ Cos2A = CosA + SinA / CosA- SinA
    1. answers icon 5 answers
    2. clive asked by clive
    3. views icon 2,465 views
  6. how do you solve this.prove: cos2A plus cosA divided by sin2A minus sinA equal to cos2A plus 1 divided by sinA
    1. answers icon 1 answer
    2. lungisile ntobela asked by lungisile ntobela
    3. views icon 1,135 views
  7. Prove that in any triangle ABC Sin2A+Sin2B+Sin2C/SinA+SinB+SinC=8Sin(A/2)Sin(B/2)Sin(C/2)
    1. answers icon 1 answer
    2. joel asked by joel
    3. views icon 1,038 views
  8. Prove That Sin2A+SIN2B+SIN2C/SINA+SINB+SINC=8SinA/2SINB/2SINC/2
    1. answers icon 1 answer
    2. joel asked by joel
    3. views icon 911 views
  9. Prove That Sin2A+ Sin2B +SIN2C/sinA+SINB+SINC=8sinA/sinB/2COSC/2
    1. answers icon 1 answer
    2. Joel asked by Joel
    3. views icon 978 views
  10. Prove:1/cos2A+sin2A/cos2A=sinA+cosA/cosA-sinA
    1. answers icon 1 answer
    2. Piwo asked by Piwo
    3. views icon 592 views