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# Exercise 4.4: Principal Value of Inverse Trigonometric Functions

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EXERCISE 4.4

1. Find the value of

(i) sec-1 ( 2/√3 )

(ii) cot-1 (√3 )

(iii) cosec-1 (-√2 )

2. Find the value of

(i) tan-1 (√3)- sec-1 (-2)

(ii) sin-1 (-1) + cos-1( 1/2 ) + cot-1 (2)

(iii) cot-1(1) + sin-1 ( - √3/2 ) - sec-1 (-√2)

Answers:

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12th Mathematics : UNIT 4 : Inverse Trigonometric Functions : Exercise 4.4: Principal Value of Inverse Trigonometric Functions | Problem Questions with Answer, Solution

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