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Prove that cos7x+cos5x/sin7x-sin5x=cotx

  1. Can you please help me verify these?>sin7x-sin5x= tanx(cos7x-cos5x) >(1-cosx)cot(1/2x) = sinx >1+tanx tan(x/2) = secx Its very
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    2. Karla asked by Karla
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  2. Hi, I need help differentiating this equationy=(cos5x) (e^-5x ) This is what I tried to do.... -5 (sin5x) (e^-5x) + 5 (e^-5x)
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    2. SC asked by SC
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  3. Integrate the following indefinite integral:(sin7x)^12 * (cos7x)^3 Hint: sin^2 + cos^2 = 1
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    2. Taylor asked by Taylor
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  4. find all values of x on interval 0-2pi.(sin4x)(cos7x)=(cos4x)(sin7x) identities should be used.
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    2. Ashten asked by Ashten
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  5. Sin5x cos2x + cos5x sin2x=
    1. answers icon 1 answer
    2. Becky asked by Becky
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  6. value of expression (cos5x + cos3x)/ (sin5x - sin3x) where x = (3.14/8)
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    2. jignesh asked by jignesh
    3. views icon 740 views
  7. Can some one please explain this problem to me?Find lim x->0 (sin5x/sin7x)
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    2. Cat asked by Cat
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  8. the expression cos4x cos3x + sin4x sin3x is equivalent towhich one of the following is the answer: 1) sinx 2) sin7x 3) cosx 4)
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    2. Rony asked by Rony
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  9. Prove cotx-1/cotx+1 = sec2x - tan2xI prove till cotx-1/cotx+1 =1/1+tanx - tanx/1+tanx
    1. answers icon 1 answer
    2. wang asked by wang
    3. views icon 1,531 views
  10. Simplify:(cosx + cos2x + cos3x + cos4x + cos5x + cos6x) / (sinx + sin2x + sin3x + sin4x + sin5x + sin6x) into a single Cotangent
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    2. Jeff asked by Jeff
    3. views icon 1,754 views