Sunday
May 19, 2013

# Homework Help: trig

Posted by dat on Sunday, May 8, 2011 at 11:53am.

A sine wave function f(x) = a sin(bx) has amplitude 10 and period 40. What are the
values of a and b?
(A) a = 10 and b = 20/pi (
B) a = 10 and b = 1/40
(C) a = 10 and b = pi/20
(D) a = 10 and b = 40
E) None of the above.

• trig - Henry, Monday, May 9, 2011 at 6:15pm

b = 2pi*f*t = 2*pi*1/T = 2pi/T = 2pi/40
= pi/20.

• trig - Henry, Monday, May 9, 2011 at 6:23pm

CORRECTION:
b = 2pi*f = 2pi*1/T = 2pi/T = 2pi/40 =
pi/20.

Related Questions

trig - find the period and amplitude of each sine function.then sketch each ...
physics - A wave on a string has a wave function given by y(x, t) = (0.0210 m)...
trig - Write the equation of the sine function with an amplitude of, a period of...
Trig - Write the equation of the sine function with an amplitude of 1/7, a ...
trig - Construct the equations of the following trigonometric functions: A)A ...
Trig - 4. Write the equation of the cosine function with an amplitude of 1/3, a ...
calculus - Posted by Paul on Friday, February 19, 2010 at 3:57am. I have the ...
Physics - A sine wave is traveling to the right on a cord. The lighter line in ...
Precalc/Trig - wave is modeled by the function ... h(t) = 3cos(p/10)*t What is ...
trig - list the period, amplitude, interval, and phase shift of: g(t)=5/2sint-pi...