Question

The angle between a pair of lines given by F = 3î +2} − 2k + 1⁄2 (î + 2 j +2k), r = 5î − 2} +1⁄21⁄2 (3î +2ĵ+6k) is

• A. cos^-1(\(\frac{19}{21}\))
• B. sin^-1(\(\frac{19}{21}\))
• C. cos^-1(\(\frac{17}{21}\))
• D. tan^-1(\(\frac{19}{21}\))

Answer 1

The Correct Option is A

The correct option is(A): cos^-1(\(\frac{19}{21}\))