NCERT Class 11 Mathematics Solutions: Chapter 3 – Trigonometric Functions Miscellaneous Exercise Part 4 (For CBSE, ICSE, IAS, NET, NRA 2022)

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In Figure Trignometric Identities Are Shown

1. Find for in quadrant III


Here, is in quadrant III.

i.e.. ,

So, are negative, where as is positive.

It is given that


So, the respective values of