Can somebody help me out with physics?

Physics
Tutor: None Selected Time limit: 1 Day

 An athlete participates in a discus throw competition during an Olympiad that takes place in a city where acceleration due to gravity is 9.80 m/s2. He throws the discus with an initial velocity of 20.0 m/s at an angle of 30.0 above the horizontal. Neglecting the height of the discus at the point of release, what is the range of the discus?   

May 14th, 2015

u=iniatial velocity

v=final velocity

u= vcos theta-at

0=20cos30-9.8t

17.32=9.8t

t=1.767

range=ut=20*1.767

=35.35 m

May 14th, 2015

17.32=9.8t did you divided or did you multiplied?

May 14th, 2015

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May 14th, 2015
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May 14th, 2015
May 26th, 2017
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