trigonometry pls try this n let me know

If 12cot^3@ - 31cosec@ + 32= 0 then find sine@
@= theta

2 Answers

are you sure there is a cube?

I think it should be a square..

then the solution will be found by taking

12 (cosec^2 x) - 31 cosec x + 20 = 0

Now solve.. but with the cube i cant see a lot directly except taking the difference of cube..

i mean cot^3 x -1 = (cot x -1)(1+cot x + cot^2 x) = (cot x -1) ( cosec^2 x + cot x )

I am running from office or else would have tried this..

sry

its ok bhaiya no probs and it is square not cube... u r rite

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