Math Chapter Wise question with answer

Q01 lf a and b are two unit vectres inclined at an angle, 3 π then the value of a b + + is– English · JDD-75-PGT TIER II-X-15 28.06.2015 Q02 If a and b are two unit vectors such that 2 a b + + and 5 4 a b − − are perpendicular to each other, then the angle... English · PGT 2004 Q03 If x and y are two unit vectors and φ is the angle between them, then 1 x y 2 − − is equal to: English · PGT 2002 Q04 If â and b̂ are two unit vectors inclined at an angle 300 to each other, then ˆ â b + + is equal to English · UP PGT-2016 (02-02-2019) Q05 If â and b̂ are two unit vectors such that ˆ ˆ (a 2b) (5a 4b), then the angle between â and b̂ is– English · UP PCS (Pre) 2007 Q06 If a and b are two unit vectors inclined at an angle θ, then sin 2 θ = English · TGT 2010