Find the values of each of the expressions in Exercises 16 to 18.
17.
As we know
If which is the principal value range of .
So, as in ;
Hence we can write as :
=
Where
and
CBSE Date Sheet 2025 (Out) Live: Class 10, 12 board exam time table at cbse.gov.in; syllabus, sample papers
CBSE Class 12 board exam date sheet 2025 out; exams from February 15 to April 4
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