Book: RD Sharma - Mathematics (Volume 1)
Chapter: 4. Inverse Trigonometric Functions
Subject: Maths - Class 12th
Q. No. 5 of Exercise 4.2
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5
For the principal values, evaluate each of the following:
{Since 
An angle in 
whose sine is x,
Similarly, 
An angle in [0,
] whose cosine is x}
Hence,
Principal value of 
is 
