Q4 of 23 Page 2

For the principal values, evaluate each of the following:

[CBSE 2012]

Let = x.

Then, cos x = = cos



Let


Then, sin y = = –sin = sin



Hence,




Principal value of is .

More from this chapter

All 23 →
2

Find the values of each of the expression

is equal to [CBSE 2011]

 3

For the principal values, evaluate the following:

tan–1√3 – sec–1(–2) [CBSE 2012]

 5

Find the values of each of the following:

[CBSE 2013]

 6

Find the values of the following:

[CBSE 2013]