Friday

August 1, 2014

August 1, 2014

Posted by **Kim** on Sunday, April 22, 2012 at 6:19pm.

tan(1/2cos^-1(9/10)

- pre-calc -
**bobpursley**, Sunday, April 22, 2012 at 7:09pmtangent of 1/2 the angle whose cosine is 9/10

Exact value? What is wrong with a calculator? Paste this into your google search window...

tan(.5*arccos(9/10))=

Is that exact enough? It appears to be an irrational number.

- pre-calc -
**kristina**, Tuesday, May 1, 2012 at 2:20pmfind the exact value of (5pie/8)

**Related Questions**

mathematics - Given that Sin(A+B)=2Cos(A-B) and tan A = 1/3 , Find the exact ...

MATHEMATICS - Given that Sin(A+B)=2Cos(A-B) and tan A = 1/3 , Find the exact ...

Pre Calc. - Use the sum or difference identity to find the exact value of sin255...

Math - 1. Find the exact value of 2tan pi/12 / 1-tan^2 pi/12 root 3/3? 2. Given ...

Math (Pre-calc) - I need to know how to solve this for my review questions. ...

Math - Use an addition or subtraction formula to write the expression as a ...

trig - please help me with some questions I skipped on a review for our test ...

Pre-Calc : Find the Exact Value of the Expression - Find the exact value of the ...

mathematics - give that sin( A + B )= 2cos(A - B ) and tan A = 1/3,Find the ...

Pre-Calc/Math - Given cos x=2/3 and 3pi/2<x<2pi, find the exact value of ...