prove tane/1-cot +cote/1-tane =1tane +cota
Answers
Answered by
4
Step-by-step explanation:
Given,
tan3A−tanA
1
−
cot3A−cotA
1
=kcot2A
LHS=
cos3A
sin3A
−
cosA
sinA
1
−
sin3A
cos3A
−
sinA
cosA
1
=
sin2A
cos3AcosA
+
sin2A
sin3AsinA
=cot2A
So, k=1
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