CBSE Class 12-science Answered
didnt understood this method i solved it by usindg radian method thats much simple
Asked by Farooq Ahmad Shah | 29 Jan, 2016, 05:14: PM
Expert Answer
The method we have shown simply uses the domain and range of an inverse trigonometric function.
The range of sin inverse function is from -pi/2 to pi/2. Since, 10 is not in that interval,
to find sin-1(sin10), we have used periodicity of sine function. Sin (3*pi - X) = sin X.
We use 3*pi - X because it lies in the range of sine inverse function.
We don't understand what is meant by radian method. But if that makes it simple for you, then use it.
If you can share with us what you mean by 'radian method', we can tell you whether it can be always applicable or not.
The method we have shown uses the basic definition of inverse function and its range,
which can be used for any value of 'X' in the function sin-1(sinX).
Answered by satyajit samal | 31 Jan, 2016, 02:49: PM
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