14. If , then find the value of .
As we know the identity;
. it will just hit you by practice to apply this.
So, or ,
we can then write ,
putting in above equation we get;
=
Ans.
CBSE Class 12 board exams 2025 to have 50% competency-based questions; no change in 10th
CBSE Class 12 board exams 2024 over; expected result date, trends of last 10 years
CBSE Class 12 accountancy board exam analysis 2024 out; paper rated easy, balanced
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