Question

proove that 1-cosA/sinA

Answer 1

Answer:

hope it's helpful to you

Step-by-step explanation:

LHS [math]= \frac{1 - \cos A}{\sin A}[/math]

[math]= \frac{\sin A(1 - \cos A)}{\sin^2 A}[/math]

[math]= \frac{\sin A(1 - \cos A)}{1 - \cos^2 A}[/math]

[math]= \frac{\sin A(1-\cos A)}{(1 - \cos A)(1 + \cos A)}[/math]

[math] \frac{\sin A}{1 + \cos A}[/math]

[math]=[/math] RHS ■

Answer 2

Answer:

LHS  =1−cosAsinA  

=sinA(1−cosA)sin2A  

=sinA(1−cosA)1−cos2A  

=sinA(1−cosA)(1−cosA)(1+cosA)  

sinA1+cosA  

=  RHS ■

hope it helps you

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