A stone is projected from a point O on a cliff with a speed of 20 m/s at an angle of elevation of 30(degrees) . T seconds later the angle of depression of the stone from O is 45(degrees). Find the value of T .
i encountered this problem while solving M2 past exam quetions and i couldnt solve it... (Worried)... to make things worse no one in my class knows how to solve this problem (Headbang). Pls hlp me cuz xam is in a few days. i will be very grateful...(Bow)