Question

Tangente de a +cotangente de a = secante de a cosecante de a
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Answer 1

Tan(a) + Cot(a)

=Sen(a)/Cos(a) + Cos(a)/Sen(a)

=(Sen^2(a)+Cos^2(a))/(Sen(a).Cos(a))

=1/(Sen(a).Cos(a))

=Csc(a).Sec(a)

=Sec(a).Csc(a)