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Problem Questions with Answer, Solution - Exercise 4.2: Cosine Function and Inverse Cosine Function | 12th Mathematics : UNIT 4 : Inverse Trigonometric Functions

Chapter: 12th Mathematics : UNIT 4 : Inverse Trigonometric Functions

Exercise 4.2: Cosine Function and Inverse Cosine Function

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EXERCISE 4.2

 

1. Find all values of such that

(i) -6π ≤ x ≤ 6π and cos x = 0 (ii) -5π ≤ x ≤ 5π and cos x = 1.




2. State the reason for 



3. Is cos(xcos(x) true? Justify your answer.



4. Find the principal value of cos1 (1/2)



5. Find the value of




6.Find the domain of 





7. For what value of x , the inequality π/2 < cos-1 (3x -1) < π holds?



8. Find the value of 




Answers:


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12th Mathematics : UNIT 4 : Inverse Trigonometric Functions : Exercise 4.2: Cosine Function and Inverse Cosine Function | Problem Questions with Answer, Solution

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12th Mathematics : UNIT 4 : Inverse Trigonometric Functions


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