1+cos theta/sin theta=cot theta/2
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Hi. Mate!!
1 + cos (@) = 2 Cos² ( @ / 2 )
Sin (@ ) = 2 Sin ( @ / 2 ) × Cos ( @ / 2 )
1 + Cos ( @ ) / Sin( @ ) =
2 Cos² ( @ / 2 ) / { 2 Sin ( @ / 2 ) × Cos ( @ / 2 ) }
= Cos ( @ / 2 ) / Sin ( @/2)
Cot ( @/2)
where @ = theta.
Have a great future ahead.
1 + cos (@) = 2 Cos² ( @ / 2 )
Sin (@ ) = 2 Sin ( @ / 2 ) × Cos ( @ / 2 )
1 + Cos ( @ ) / Sin( @ ) =
2 Cos² ( @ / 2 ) / { 2 Sin ( @ / 2 ) × Cos ( @ / 2 ) }
= Cos ( @ / 2 ) / Sin ( @/2)
Cot ( @/2)
where @ = theta.
Have a great future ahead.
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