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Mathematics: Post your doubts here!

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The range is from zero to 90. Are you getting an angle which is greater than 360 degrees? If yes, then subtract it from 360 to get your second angle.
the angle im getting is 154 even after subtracting from 360 and the required angle is 10.4 :\
 
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how ?? can u show me using the formula pls ??
iterative formula is x= tan^−1(x) + π
x0=3/2 π
x1=tan^−1(3/2 π) + π = 4.503
x2=tan^−1(4.503) + π=4.494
x3=tan^−1(4.494) + π = 4.493
x4=tan^−1(4.493) + π = 4.493
hence , x=4.493
 
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the angle im getting is 154 even after subtracting from 360 and the required angle is 10.4 :\
The angle in 4th quadrant is 360-50.8 degrees. Add arctan(3) to it to get 380.8 degrees, subtracting 360 from it and dividing by 2 gives 10.4 as the answer.
 
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The angle in 4th quadrant is 360-50.8 degrees. Add arctan(3) to it to get 380.8 degrees, subtracting 360 from it and dividing by 2 gives 10.4 as the answer.
thankss alott...i have been working on it since ages.so do we have to do this in every double angle question ?
 
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iterative formula is x= tan^−1(x) + π
x0=3/2π
x1=tan^−1(3/2π) + π = 4.503
x2=tan^−1(4.503) + π=4.494
x3=tan^−1(4.494) + π = 4.493
x4=tan^−1(4.493) + π = 4.493
hence , x=4.493


what value are u getting for tan^-1 (3π/2) ?? Have u taken π in radians or in degrees because if i take in radian then tan^-1(3π/2) = 78.02 and in degrees i m getting tan^-1(3π/2) =89.79
 
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Can someone help me with a P3 Question. Paper 33 of S11 Question no 8. I do not get how to differentiate it?

The diagram shows the curve y = 5sin^3xc os2x for 0 x 1/2π, and its maximum point M.
(i) Find the x- coordinate of M.

(ii) Using the substitution u = cos x, find by integration the area of the shaded region bounded by the curve and the x-axis.
 
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what value are u getting for tan^-1 (3π/2) ?? Have u taken π in radians or in degrees because if i take in radian then tan^-1(3π/2) = 78.02 and in degrees i m getting tan^-1(3π/2) =89.79
its 3/2π,not 3π/2 and i think u dont have the right mode on your calculator coz u cant get 78.02 on rad mode
 
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ikr?! CIE are such trolls
hope gt to be 30 ....................................................................................................................................................................................................
 
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hope gt to be 30 ....................................................................................................................................................................................................

30 what?
 
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