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If cos(alpha+beta)=4/5.sin(alpha-beta)=5...

If `cos(alpha+beta)=4/5.sin(alpha-beta)=5/13`and `alpha`,`beta`lie between 0 and `pi/4`then find the value of `tan2alpha`

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UNITED BOOK HOUSE-JODHPUR PARK BOYS'S SCHOOL-EXERCISE
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  6. Solve :6x^2-(5+3i)x+11i-3=0in the complex plane C.

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  8. Find n, if the ratio of the fifth term from beginning to the fifth ter...

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  9. Find the natural number a for which sum(k=1)^nf(a+k)=16(2^n-1)where th...

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  10. The line joing two points A(2,0)and B(3,1)I rotated about A in anti cl...

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  16. Solve :(|x+3|+x)/(x+2)>1,x inR,

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  17. Find principal amplitude of (1+itan((3pi)/5))

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