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Assertion (A) : If a line make angles 45^(@), 45^(@) with the x and y axis repectively then it makes angle 60^(@) with z - axis Reason (R ) : If alpha,beta,lambda are the angle made by a line with the coordinate axes then cos^(2) alpha + cos^(2)beta + cos^(2) lambda = 1

Answer»

Both A and R are ture and R is the CORRECT explanation of A
Both A and R are true but R is the correct explanation of A
A is true but R is FALSE
A is false but R is true

Answer :D


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