prove that :- cot theta - tan theta = 2 cos ^2 theta - 1 / sin theta cos theta
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Given:
To prove that:
_____________________________________________________________
Proof:
We know that,
,
LHS = cot A - tan A
=>
=>
We know that,
=>
=>
=>
_______________________________
Hence,
=>
=>
=>
=> RHS,
∴ Hence proved
To prove that:
_____________________________________________________________
Proof:
We know that,
,
LHS = cot A - tan A
=>
=>
We know that,
=>
=>
=>
_______________________________
Hence,
=>
=>
=>
=> RHS,
∴ Hence proved
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