Friday

July 25, 2014

July 25, 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 - Find an equation of the line that bisects the obtuse angles formed by the...

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

Algebra - How would i complete these problems? 1. (√6mn)^5 2. ^3√16x...

maths - I will be thankfull to you if you help me to solve the below problem: 6...

Algebra Work Check - 1. 5√6 * 1/6√216 5/6 * √1296 5/6 * √...

algebra 1 - alright i have a few questions if its ok..? Simplify: 1. -2√(...

Algebra - Simplify the expressions and solve the equations 1. 2√3 - √...

grade 11 math - I don't get how to do this. I'm so lost please help me. ...

Math - Use a sum or difference identity to find the exact value of sin225° a...

Math help Ms. Sue please - 1. What is the simplified form of the expression? 7m^...