A projectile is thrown in the upward direction making an angle of \[60{}^\circ \] with the horizontal direction with a velocity of 147\[m{{s}^{-1}}\]. Then the time after which its inclination with the horizontal is \[45{}^\circ \], is

\[7.5\left( \sqrt{3}+1 \right)\text{s}\]

\[15\left( \sqrt{3}-1 \right)\text{s}\]

\[15\left( \sqrt{3}+1 \right)\text{s}\]

\[7.5\left( \sqrt{3}-1 \right)\text{s}\]

A projectile is thrown in the upward direction making an angle of \[60

1.	A projectile is thrown in the upward direction making an angle of \[60{}^\circ \] with the horizontal direction with a velocity of 147\[m{{s}^{-1}}\]. Then the time after which its inclination with the horizontal is \[45{}^\circ \], is
A.	\[15\left( \sqrt{3}-1 \right)\text{s}\]
B.	\[15\left( \sqrt{3}+1 \right)\text{s}\]
C.	\[7.5\left( \sqrt{3}-1 \right)\text{s}\]
D.	\[7.5\left( \sqrt{3}+1 \right)\text{s}\]
Answer» D. \[7.5\left( \sqrt{3}+1 \right)\text{s}\]