a$)$ What is the angle between a wire carrying an $7\mathrm{.}97$ A current and the $1\mathrm{.}15$ T field it is in if $50$ cm of the wire experiences a magnetic force of $2\mathrm{.}39$ N $?$

b$)$ What is the force on the wire if it is rotated to make an angle of $90$ with the field?

N