Sunday

February 1, 2015

February 1, 2015

Posted by **Katie** on Monday, March 15, 2010 at 1:09pm.

sin [2sin^-1 (-sq rt (3)/2)]

how do i answer this question? i don't know how to find the answer.

- College Math -
**Reiny**, Monday, March 15, 2010 at 4:50pmstart with sin^-1 (-√3/2)

which is 240 degrees or 300 degrees

so 2sin^-1 (-√3/2) is 480 or 600 degrees

then the sine of that ...

sin 480 = sin 120 = sin 60 = √3/2

sin 600 = sin 240 = - sin 60 = -√3/2

**Answer this Question**

**Related Questions**

math - Sin(2x)=2sin(x)cos(x) find the exact value in radians with 2sin^2(x)+sin^...

math - Sin(2x)=2sin(x)cos(x) find the exact value in radians with 2sin^2(x)+sin^...

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

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

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

Algebra II - 1) Find the exact value of cos theta if the terminal side of theta ...

MATH - 1.)Find the exact solution algebriacally, if possible: (PLEASE SHOW ALL ...

Calculus - I need to find the exact solutions on the interval [0,2pi) for: 2sin^...

trig - find the exact solutions 2cos^2x+3sinx=0 the way it stands, that is a "...

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