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If `tanalpha` and `tanbeta` be the roots of the equation `(x^2+px+q=0)` then the value of the expression `sin^2(alpha+beta)+p sin(alpha+beta)cos(alpha+beta)+qcos^2(alpha+beta)` is

A

p

B

q

C

0

D

1

Text Solution

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The correct Answer is:
B
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