Friday

March 27, 2015

March 27, 2015

Posted by **Lisa** on Saturday, July 3, 2010 at 2:04pm.

- trig -
**Damon**, Saturday, July 3, 2010 at 4:54pm7/3 = 2 1/3

2 pi is a full circle

so we have gone around clockwise two circles and pi/3

so we really want cos (-pi/3)

draw a picture of that,60 degrees below the x axis in quadrant 4

the cosine is cos -60 degrees which is 1/2

**Answer this Question**

**Related Questions**

Trig - Evaluate the trigonometric function using its period as an aid. cos 5pi ...

Trigonometry - Hi, I need help with this question: Use the addition and ...

math - Eliminate the parameter (What does that mean?) and write a rectangular ...

trig - Evaluate giving exact values and identities. Calculator based solutions ...

trig - Determine if the value of each trig function is positive, negative, zero...

Trigonometry - How do you find the exact value of cos -7pi/12 without using a ...

Trigonometry - Checking my work - Find the sum of the three smallest positive ...

trig - Solve the equation for cos theta-tan theta=0 for greater than or egual to...

trig - Determine the period, amplitude and phase shift for each given function...

trig/math - Determine the period, amplitude and phase shift for each given ...