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Please prove it for me​
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Please prove it for me​

Please prove it for me​-example-1
User Durrrutti
by
3.4k points

1 Answer

6 votes

Answer:

see explanation

Explanation:

Using the trigonometric identity

tanx =
(1)/(cotx)

Consider the left side


(cotA-1)/(cotA+1) ← divide terms on numerator/denominator by cotA

=
((cotA)/(cotA)-(1)/(cotA) )/((cotA)/(cotA)+(1)/(cotA) )

=
(1-tanA)/(1+tanA)

= right side , thus proven

User Fpark
by
3.1k points
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