Saturday

April 19, 2014

April 19, 2014

Posted by **Melinda** on Sunday, January 29, 2012 at 10:03pm.

a) √3 + √2/2

b) √2 + √3√2/4

c)√2 - √3√2/4

d)2+√2-√3√2/4

- Precalculus -
**Reiny**, Sunday, January 29, 2012 at 10:10pmcos 465°

= cos(105+360)°

= cos 105°

= cos(60+45)°

= cos60cos45 - sin60sin45

=(1/2)(√2/2) - (√3/2)(√2/2)

= (√2 - √6)/4

- Precalculus -
**Reiny**, Sunday, January 29, 2012 at 10:12pmI think c) comes closest if you had typed it correctly as

(√2 - √3√2)/4 which then is the same as mine

- Precalculus -
**Melinda**, Sunday, January 29, 2012 at 10:20pmOk, thank you!

**Related Questions**

Math - Determine the exact value of cos 465 degrees a) √3 + √2/2 b...

Math- Trig - 1. Determine the exact value of cos^-1 (pi/2). Give number and ...

Algebra II - Multiple Choice (theta) means the symbol 0 with the dash in it. 1.)...

math - find the exact value of [sec(-30 degrees)- cot 120 degrees]/1-cosec^2(45 ...

Trig hep, please? Thank you! - 1. Find the exact value of sin(195(degrees)) 2. ...

advanced functions - Angle a lies in the second quadrant and sina=7/25. a) ...

Trignometry questions EASY HELP - 1. Which is a solution to the equation below? ...

precalculus PLEASE HELP!! - Find a simplified expression for cos(tan^(-1)(x/5)) ...

math - Determine exact value of cos(cos^-1(19 pi)). is this the cos (a+b)= cos a...

Trig - What is the exact value of cos 40 degrees cos 50 degrees minus sin 40 ...