Wednesday

October 22, 2014

October 22, 2014

Posted by **shaili** on Monday, August 9, 2010 at 9:39am.

- trig -
**Reiny**, Monday, August 9, 2010 at 9:44amdid you notice that 23π/6 is π/6 short of 2π ?

so and angle of 23π/6 is coterminal with -π/6

so cos(23π/6) = cos(-π/6) = cos(π/6)

from the 30-60-90 triangle ratios you should know that cos 30° = √3/2 ...... (30° = π/6 radians)

then cos 23π/6 = √3/2

- trig -
**Anonymous**, Monday, November 28, 2011 at 6:44pmwhat is the exact value of tan pi o

ver two

**Answer this Question**

**Related Questions**

Trig - Find the exact circular function value for: sec(23pi/6) I know the answer...

math, trig - What is the exact value of the cos of 23pi/12? (Twenty-three pi ...

Trig - How do you find the exact circular function value of csc(-23pi/6)? I dont...

trig - I need help on these problems: Find the exact value of tan(23pi/6) also, ...

Trigonometry - What is the exact value of the cos of 23pi/12? (Twenty-three pi ...

Trig - If cosx = 10/19 an pi < x < 2pi, find the exact value of cos x/2 ...

trig - 2sin(x)cos(x)+cos(x)=0 I'm looking for exact value solutions in [0, 3&#...

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

Trig - 1. Establish the identity: sin(theta+3pi/2)=-cos(theta) 2. Find the exact...

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