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RD Chapter 4- Inverse Trigonometric Functions Ex-4.13 Interview Questions Answers

Question 1 :

If cos-1 (x/2) + cos-1 (y/3) = α, thenprove that 9x2 – 12xy cos α + 4y2 = 36 sin2 α

Answer 1 :

Given cos-1 (x/2)+ cos-1 (y/3) = α

Hence, proved.

Question 2 : Solve the equation: cos-1 (a/x)– cos-1 (b/x) = cos-1 (1/b) – cos-1 (1/a)

Answer 2 :

Given cos-1 (a/x)– cos-1 (b/x) = cos-1 (1/b) – cos-1 (1/a)

Question 3 :

Solve :

Answer 3 :


Question 4 :

Prove that:

Answer 4 :



Selected

 

RD Chapter 4- Inverse Trigonometric Functions Ex-4.13 Contributors

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