Question

prove cotA-tanA=2cos squareA-1÷sinA.cosA

Answer 1

Step-by-step explanation:

cotA-tanA  

= cos A /sin A - sin A /cos A  

= [cos2 A - sin2 A] / sin A cos A  

= [cos2 A - (1 - cos 2 A)] / sin A cos A  

= 2cos2 A -1/sinAcosA  

proved

Answer 2

This is the answer. I hope it is help you