If tanA and tanB are the roots of the quadratic equation 3x2−10x−25=0, then the value of 3sin2(A+B)−10sin(A+B)cos(A+B)−25cos2(A+B) is :
Held on 15 Apr 2018 · Verified 6 Jul 2026.
−25
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−10
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If the roots of x² - 5x + k = 0 are in the ratio 2:3, then k equals:
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