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Prove: sin3x-sinx/cos3x-cosx=-cot2

  1. Prove: sin3x-sinx/cos3x-cosx=-cot2
    1. answers icon 1 answer
    2. Dini asked by Dini
    3. views icon 809 views
  2. Prove the following functions:(sinx+sin2x)/(1+cosx+cos2x)=tan x (cos3x/sinx)+(sin3x/cosx)=2cot2x tan2x=(2/cotx-tanx) theses are
    1. answers icon 2 answers
    2. jared asked by jared
    3. views icon 1,131 views
  3. help please!:(sinx + sin2x +sin3x) / (cosx + cos2x + cos3x) = tan2x
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    2. Aiden asked by Aiden
    3. views icon 958 views
  4. the expression cos4x cos3x + sin4x sin3x is equivalent towhich one of the following is the answer: 1) sinx 2) sin7x 3) cosx 4)
    1. answers icon 4 answers
    2. Rony asked by Rony
    3. views icon 3,989 views
  5. prove:sinx/sec2x+cosx/csc2x=sin3x
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    2. liger asked by liger
    3. views icon 753 views
  6. I need to prove that the following is true. Thanks(cosx / 1-sinx ) = ( 1+sinx / cosx ) I recall this question causing all kinds
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    2. abdo asked by abdo
    3. views icon 1,025 views
  7. 1.) How would I simplify: sin4x*cos3x -cos3x*sin3x into a single trigonometric function?2.) determine the general solution to
    1. answers icon 1 answer
    2. Leash asked by Leash
    3. views icon 940 views
  8. Prove the following identity:1/tanx + tanx = 1/sinxcosx I can't seem to prove it. This is my work, I must've made a mistake
    1. answers icon 1 answer
    2. Heather asked by Heather
    3. views icon 819 views
  9. prove the identity(sinX)^6 +(cosX)^6= 1 - 3(sinX)^2 (cosX)^2 sinX^6= sinx^2 ^3 = (1-cosX^2)^3 = (1-2CosX^2 + cos^4) (1-cosX^2)
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    2. JungJung asked by JungJung
    3. views icon 937 views
  10. Simplify:(cosx + cos2x + cos3x + cos4x + cos5x + cos6x) / (sinx + sin2x + sin3x + sin4x + sin5x + sin6x) into a single Cotangent
    1. answers icon 2 answers
    2. Jeff asked by Jeff
    3. views icon 1,740 views