Fermi · Concept Library · Courses · Books · Problems · Simulations · Math Wiki · High School Fermi › Problems The angles which the vector makes with the coordinate axes are
MATHEMATICS · Single correct · CBSE · Mathematics · Three-Dimensional Geometry · Three-Dimensional Geometry
Problem The angles which the vector a = 3 i ^ + 6 j ^ + 2 k ^ \mathbf{a}=3\hat{i}+6\hat{j}+2\hat{k} a = 3 i ^ + 6 j ^ + 2 k ^ cos − 1 3 7 , cos − 1 6 7 \cos^{-1}\frac{3}{7},\ \cos^{-1}\frac{6}{7} cos − 1 7 3 , cos − 1 7 6 cos − 1 2 7 \cos^{-1}\frac{2}{7} cos − 1 7 2 cos − 1 4 7 , cos − 1 5 7 \cos^{-1}\frac{4}{7},\ \cos^{-1}\frac{5}{7} cos − 1 7 4 , cos − 1 7 5 cos − 1 3 7 \cos^{-1}\frac{3}{7} cos − 1 7 3 cos − 1 3 7 , cos − 1 4 7 \cos^{-1}\frac{3}{7},\ \cos^{-1}\frac{4}{7} cos − 1 7 3 , cos − 1 7 4 cos − 1 1 7 \cos^{-1}\frac{1}{7} cos − 1 7 1 Browse the problem library