## KC Sinha Solution Class 12 Chapter 4 Inverse Trigonometric Function Exercise 4.1

Exercise 4.1 TYPE 1 Question 1 Find the value of (i) Sol : Let ..(i) ⇒ ∵ ⇒ ⇒..(ii) On comparing (i) and (ii) equations ⇒ (ii) Sol : ⇒Let ..(i) ⇒ ∵ ⇒ ⇒ ⇒..(ii) From (i) and (ii) , we get ⇒ (iii) Sol : Note: cot-1 (-θ)=π-cot-1 θ ⇒cot-1 (-√3)=π-cot-1 (√3) ⇒ ⇒ …

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