Match the following Columns: A line makes angles a, b, g with the co-ordinate axes. Column I Column II (A) ∑cos2 α

Question

Match the following Columns:

A line makes angles α, β, γ with the co-ordinate axes.

	Column I		Column II
(A)	∑cos2 α	(P)	3
(B)	∑sin2 α	(Q)	-1
(C)	∑cos(2α)	(R)	2
(D)	∑(cos2 α + sin2 α)	(S)	1

Answer 1

Answer is 

= 2 – 3 = –1