Q7 of 303 Page 4

Write each of the following in the simplest form:

Let us assume x = a secθ


θ = sec–1 …(1)


∴ we can write


Cot–1


= Cot–1


= Cot–1


= Cot–1


= Cot–1


= cot–1(cotθ )


= θ.


From 1 we get the given equation simplification to sec–1 .


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