Q. 4 G5.0( 1 Vote )

# Evaluate each of the following:

As sec(–θ) is sec(θ)

sec = sec

The value of sec is –√2 .

Let sec–1(–√2) = y

sec y = –√2

= – sec = √2

= sec

= sec

The range of principal value of sec–1is [0, π]–{}

and sec = –√2.

Therefore, the value of sec–1sec is .

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