ABC is a triangle, right-angled at A. The resultant of the forces acting along AB and AC with magnitudes AB1 and AC1 respectively is a force along AD, where D is the foot of the perpendicular from A onto BC. The magnitude of the resultant is:
View solution & explanation →Suppose a population A has 100 observations 101,102,…,200, and another population B has 100 observations 151,152,…,250. If VA and VB represent the variances of the two populations, respectively, then VBVA is:
If the roots of the quadratic equation x2+px+q=0 are tan30∘ and tan15∘, respectively, then the value of 2+q−p is:
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