SOLUTION: Please help me finde the value of cos^-1(0) Thank you, Natalie

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Question 149438: Please help me finde the value of cos^-1(0)
Thank you, Natalie
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
What is asking for is an angle. So this means that .

So, let's reference the unit circle




From the picture, we can see that the point (0,1) tells us that cos%2890%29=0 or cos%28pi%2F2%29=0 (remember, the x coordinate corresponds to cosine).


Start with the given equation.


Take the inverse cosine of both sides. This will eliminate the "cos" on the left side.


So (in degrees) or (in radians)