RS Aggarwal - Mathematics

Book: RS Aggarwal - Mathematics

Chapter: 4. Inverse Trigonometric Functions

Subject: Maths - Class 12th

Q. No. 7 F of Exercise 4C

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7 F

Prove that:


To Prove:


Formula Used:


Proof:


LHS … (1)


Let



Therefore … (2)


From the figure,


… (3)


From (2) and (3),


… (3)


Now, let


Therefore … (4)


From the figure,


… (5)


From (4) and (5),


… (6)


Substituting (3) and (6) in (1), we get


LHS






= RHS


Therefore, LHS = RHS


Hence proved.


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