If sin(a) and cos(a) are the roots of the equation ax2 + bx + c = 0, then
a2 - b2 + 2ac = 0
(a - c)2 = b2 + c2
a2 + b2 - 2ac = 0
a2 + b2 + 2ac = 0
In , if cot(A), cot(B) and cot(C) are in AP, then a2, b2 and c2 are in
HP
AP
GP
None of the above
If , where are the angles made by a line with the positive directions of the axes of reference, then the measure of is
AB is a vertical pole. The end A is on the ground level. C is the middle point of AB and P is a point on the ground level. The portion BC subtends an angle at P. If AP = nAB, then is equal to
None of these