Friday

August 29, 2014

August 29, 2014

Posted by **Anonymous** on Thursday, November 18, 2010 at 8:51am.

h(t)=-9cos(7t-Pie/5)

I got the amplitude and the period. For the phase shift I got (Pie/5)/7 but its wrong. Can someone tell me what I did wrong?

- Precalculus -
**Reiny**, Thursday, November 18, 2010 at 10:18amh(t)=-9cos(7t-π/5)

or

h(t)=-9cos 7(t-π/35)

the phase shift is π/35 to the right,

your answer of π/5/7 is actually right, except it is not written in good form. It is ambigious, does it mean

(π/5) / 7 or π/(5/7)

**Related Questions**

Precalculus - State the amplitude, period, and phase shift of the function. h(t...

Precalculus - 1.Simplify the expression (sin x+cos x)^2 - sin2x 2.Determine the ...

Pre Cal. - State the amplitude, period, and phase shift of the function y=-3cos(...

Math - state the amplitude, period, frequency, phase shift and vertical shift of...

Trig/Math - f(x)=1/3sin(2/3x-π/4)+4 Find the amplitude, period, phase shift...

Trig/Math - f(x)=1/3sin(2/3x-π/4)+4 Find the amplitude, period, phase shift...

Trig/advance math concepts - state the amplitude, period, and phase shift of the...

Alg 2 trig - Write a sine equation for period= pie, amplitude=1/2, vertical ...

math - state the period, the amplitude and the phase shift of the function y = 1...

algebra-trig help asap - Write an equation I'm not sure how to do this though. ...