Book: RS Aggarwal - Mathematics
Chapter: 4. Inverse Trigonometric Functions
Subject: Maths - Class 12th
Q. No. 21 of Exercise 4B
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21
Find the principal value of each of the following :
[Formula: cos-1(-x)=π – cos(x) and sin-1(-x)= -sin(x) ]
Putting the values for each of the inverse trigonometric terms
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= 
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