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September 21, 2014

September 21, 2014

Posted by **brandy** on Monday, July 14, 2008 at 10:09pm.

1. find the exact value of sin (pi/3).

even more confusing is

2. find the exact value of csc^-1 (1).

i would appreciate any kind of help! thank you!

- trig/pre -calc -
**Anonymous**, Monday, July 14, 2008 at 10:54pmI normally like to replace pi with 180.

So...

sin(pi/3)

= sin(180/3)

= sin(60)

What is sin(60)? sqrt(3)/2

As for csc^-1(1), I like to think of this as its inverse, 1/sin^-1(1). Where in the unit circle is sin=1? That is, where is y=1? 90 degrees

- trig/pre -calc -
**drwls**, Tuesday, July 15, 2008 at 12:34amSince they seem to want angles to be expressed in radians, it might be better to give pi/2 as the answer to csc^-1(1) . 90 degrees is also correct, of course.

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