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

" 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 tan "2a

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If cos(alpha+beta)=(4)/(5);sin(alpha-beta)=(5)/(13) and alpha,beta lie between 0&(pi)/(4) then find the value of tan2 alpha

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