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if A+B+C=π prove that sin(B+2C)+sin(C+2A)+sin(A+2B)=4sin(B-C)/2

  1. Solve the equation for solutions in the interval 0<=theta<2piProblem 1. 3cot^2-4csc=1 My attempt: 3(cos^2/sin^2)-4/sin=1
    1. answers icon 2 answers
    2. Renee asked by Renee
    3. views icon 1,721 views
  2. prove that(3-4sin^2x)(sec^2x-tan^2x) = (3-tan^2x)(1-4sin^2x)
    1. answers icon 1 answer
    2. Amit asked by Amit
    3. views icon 278 views
  3. if A+B+C=π prove that sin(B+2C)+sin(C+2A)+sin(A+2B)=4sin(B-C)/2 sin(C-A)/2 sin(A-B)/2
    1. answers icon 1 answer
    2. rabin asked by rabin
    3. views icon 594 views
  4. cos^6A-sin^6A=cos2A(1-1÷4sin^2 2A) Prove
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    2. kishor asked by kishor
    3. views icon 2,861 views
  5. Prove that cot(x/2)-3cot(3x/2)=4sin(x)÷(1+2cosx)
    1. answers icon 1 answer
    2. Reshmi asked by Reshmi
    3. views icon 836 views
  6. Prove that:(3-4sin^2A) (1-3tan^2A)=(3-tan^2A)(4cos^2A-3)
    1. answers icon 1 answer
    2. Rishabh asked by Rishabh
    3. views icon 1,470 views
  7. Prove that (3-4sin^2A) (1-3Tan^2A)= (3-tan^2A) (4cos^2A-3)
    1. answers icon 8 answers
    2. Alina maharjan asked by Alina maharjan
    3. views icon 12,143 views
  8. Prove that sin3theta=3sintheta-4sin^3theta
    1. answers icon 1 answer
    2. chama asked by chama
    3. views icon 733 views
  9. draw the graph of 4sin(x+30) and 2+tanx for values of x from 0 degree to 360degree and obtain the solution within the range of
    1. answers icon 2 answers
    2. mohamed kantabulah asked by mohamed kantabulah
    3. views icon 633 views
  10. f(t)=cos(πt/4)finding velocity i got -π/4sin(πt/4) then i had to find velocity after 3 sec which is v'(3)=-π/4sin(π(3)/4) =
    1. answers icon 3 answers
    2. feather asked by feather
    3. views icon 1,098 views