The question says: "Find sin(x/2), cos(x/2) and tan(x/2) from the given information: cscX=3, 90degrees < x < 180degrees." For sin(x/2), I got the answer (Sqrt)((3-2(sqrt)2)/6). The answer guide in the text says that it should be a "3+2," but I wanted to see why that is. I am trying to find tan(x/2) using sin(x/2)/cos(x/2), and I am having some trouble after the second step, with canceling the radicals...
The question says: "Find sin(x/2), cos(x/2) and tan(x/2) from the given information: cscX=3, 90degrees < x < 180degrees." For sin(x/2), I got the answer (Sqrt)((3-2(sqrt)2)/6). The answer guide in the text says that it should be a "3+2," but I wanted to see why that is. I am trying to find tan(x/2) using sin(x/2)/cos(x/2), and I am having some trouble after the second step, with canceling the radicals...
Mathematics For Machine Technology
8th Edition
ISBN:9781337798310
Author:Peterson, John.
Publisher:Peterson, John.
Chapter67: Analysis Of Trigonometric Functions
Section: Chapter Questions
Problem 15A: For each exercise, functions of two angles are given. Which of the functions of the two angles is...
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The question says:
"Find sin(x/2), cos(x/2) and tan(x/2) from the given information:
cscX=3, 90degrees < x < 180degrees."
For sin(x/2), I got the answer (Sqrt)((3-2(sqrt)2)/6).
The answer guide in the text says that it should be a "3+2," but I wanted to see why that is.
I am trying to find tan(x/2) using sin(x/2)/cos(x/2), and I am having some trouble after the second step, with canceling the radicals...
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