please help maths!?

2 ⤊

If a signal is given by:- v = 10sin(6283t + π/2) volts. Which one of the following is the frequency of this signal?

2007-05-31 06:17:40 · 2 answers · asked by KandyMan 3 in Science & Mathematics ➔ Mathematics

(a) 10Hz
(b) 100Hz
(c) 1000Hz
(d) 2000Hz
(e) 20,000Hz

2007-05-31 06:24:56 · update #1

thank you thank you thank you.... im gonna give you best answer....

i don't know y i didn't realise it w= 2pi f

2007-05-31 06:32:55 · update #2

i think:
6283/2pi

2007-05-31 06:22:59 · answer #1 · answered by gesges 3 · 1⤊ 0⤋

w=2pi*f=6283 so f=6283/2pi=1000Hz

2007-05-31 13:57:03 · answer #2 · answered by santmann2002 7 · 1⤊ 0⤋