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piyush yadav

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If S=1/2^2cos1 + 1/cos1¤cos2+1/2^3 cos1 ¤cos2¤cos2^2 + .......... upto 10 terms . If S= sina(cotb-cotc) where a,b,c€N Then
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a stick of linear density p=2kg/m rests on a disc of radius=1m. the stick makes an angle of 60° with horizontal and is tangent
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pls. do ques . its really a good problem
it has roots with sq. roots not simple integer coz its determinant is not a perfect sq.
the previous ans. is wrong as if we sq. the eqn. it generates false solutions a better method is to divide coefficients of sin and cos by root of( sq. of coeff.ofsin+sq. of coeff of cos) . that is main pt. remaining we will proceed by making it an argument
the previous ans. is wrong as if we sq. the eqn. it generates false solutions a better method is to divide coefficients of sin and cos by root of sq. of coeff.ofsin+sq. of coeff of cos . that is main pt. remaining we will proceed by making it an argument
ans. are correct
there is a perpendicular dis. between this line and pt. ie. 19|root of 10

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