Question

The component of a vector A along y axis will have max value if

a. A makes an angle of 30°with y axis

b. A makes an angle of 60° with y axis


c. A makes an angle of 0° with y axis

d. A makes an angle of 90° with the y axis
Please explain

Answer 1

SoLuTioN :

• To Find:

✏ The component of a vector A along y axis will have max value if...

• Answer:

✏ (C) A makes an angle of 0° with y-axis

• Explanation:

✏ The component of a vector A along y axis is given by

$\mapsto \sf \: A{ \tiny{y}} = A \: cos \theta$

✏ We know that the maximum value of cos function is 1

$\mapsto \sf \: cos \theta = 1 \\ \\ \mapsto \: \boxed{ \sf{ \red{ \theta = 0 \degree}}}$