what is the domain of f(x)=cos (inverse) x + cot(inverse) x +cosec(inverse) x
f(x)=cos (inverse) x + cot(inverse) x +cosec(inverse) x
in case of cos inverse (x) we get the domain as [-1,1] ------------------------- 1
where as in the case of cot (inverse) x we get the domain as (-,)-------------------- 2
in case of cosec (inverse) x wee get the domain as (-,-1]U[1,)-----------------3
from intersection of 1 , 2 and 3 we get the domain of f(x) as {-1,1}
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