## lolroark 3 years ago a missile is launched with an initial speed of 421.1 m/sec. after 13.77 seconds, it is at its highest point. Q: what was its initial launch angle above the horizon?

1. lolroark

i think i solved it by myself but not sure. is it 13.77-9.8/421.1?

2. ujjwal

time to reach max height is given by $t=\frac{usin\theta}{g}$