Sunday

January 25, 2015

January 25, 2015

Posted by **rossi** on Friday, November 26, 2010 at 4:33pm.

a) 2- sqrt 3

b) 2- sqrt 3/ 2

c) 2+ sqrt 3/2

d) 2+ sqrt 3

I am not sure how to work this out and would appreciate you how to show me the process. Thank you in advanced!!!!!!!

- TRIG -
**Damon**, Friday, November 26, 2010 at 4:53pmsin pi/6 = sin 30 deg = 1/2

cos pi/6 = .5 sqrt 3

cos -x = cos x

so

1/4 - .5 sqrt 3 + 3/4

1 - .5 sqrt 3

(2 - sqrt 3 ) / 2

**Answer this Question**

**Related Questions**

Calculus - Please look at my work below: Solve the initial-value problem. y'' + ...

Math/Calculus - Solve the initial-value problem. Am I using the wrong value for ...

Calculus - Second Order Differential Equations - Posted by COFFEE on Monday, ...

Trig(3 all with work) - 1)Find the exact value of cos 105 by using a half-angle ...

maths - Choose the option that gives the solution of the initial-value problem ...

calculus - Differentiate. y= (cos x)^x u= cos x du= -sin x dx ln y = ln(cos x)^x...

Calc. - Differentiate. y= (cos x)^x u= cos x du= -sin x dx ln y = ln(cos x)^x ln...

Trig - Find the exact value of sin2(theta) if cos(theta) = -sqrt 5/3 and 180 <...

Trig - Find the exact values of the six trigonometric functions 0 if the ...

math - A trigonmetric polynomial of order n is t(x) = c0 + c1 * cos x + c2 * cos...