Solution :tan(A+B)=tanA+tanB/1-tanA.tanB
then ,tan45 degree=tan30+tan15/1-tan30.tan15
then tan30+tan15+tan30.tan15=1
Then 2+q-p=2+tan30+tan15+tan30.tan15=3(Answer)
Saturday, 27 August 2016
If the roots of the quadratic equation x^2+Px+q=0 are tan30 and tan15 respectively ,then the value of 2+q-p is --------------------------------
Solution :tan(A+B)=tanA+tanB/1-tanA.tanB
then ,tan45 degree=tan30+tan15/1-tan30.tan15
then tan30+tan15+tan30.tan15=1
Then 2+q-p=2+tan30+tan15+tan30.tan15=3(Answer)
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