hambyellie2006
hambyellie2006 hambyellie2006
  • 22-06-2022
  • Mathematics
contestada

pls help sin(x)/1- cos(x) - cot(x) = csc(x)​

pls help sinx1 cosx cotx cscx class=

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Medunno13
Medunno13 Medunno13
  • 29-06-2022

[tex]\text{LHS}=\frac{\sin x}{1-\cos x}-\cot x\\\\=\frac{\sin x}{1-\cos x}-\frac{\cos x}{\sin x}\\\\=\frac{\sin^{2} x}{\sin x(1-\cos x)}-\frac{\cos x(1-\cos x)}{\sin x(1-\cos x)}\\\\=\frac{\sin^{2} x-\cos x(1-\cos x)}{\sin x(1-\cos x)}\\\\=\frac{\sin^{2} x-\cos x+\cos^{2} x}{\sin x(1-\cos x)}\\\\=\frac{(\sin^{2} x+\cos^{2} x)-\cos x}{\sin x(1-\cos x)}\\\\=\frac{1-\cos x}{\sin x(1-\cos x)}\\\\=\frac{1}[\sin x}\\\\=\csc x\\\\=\text{RHS}[/tex]

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