Fatima wants to find the value of [tex]$\sin heta$[/tex], given [tex]$\cot heta-\frac{4}{7}$[/tex]. Which identity would be best for Fatima to use?
[tex]$\cos heta=\frac{1}{\sec heta}$[/tex]
[tex]$\sin ^2 heta+\cos ^2 heta=1$[/tex]
[tex]$\csc heta=\frac{t}{y}$[/tex]
[tex]$1+\cot ^2 heta=\csc ^2 heta$[/tex]

Question

Fatima wants to find the value of [tex]$\sin 	heta$[/tex], given [tex]$\cot 	heta-\frac{4}{7}$[/tex]. Which identity would be best for Fatima to use?
[tex]$\cos 	heta=\frac{1}{\sec 	heta}$[/tex]
[tex]$\sin ^2 	heta+\cos ^2 	heta=1$[/tex]
[tex]$\csc 	heta=\frac{t}{y}$[/tex]
[tex]$1+\cot ^2 	heta=\csc ^2 	heta$[/tex]

gracie081035 · Answer

The best identity to use would be the second one (sin 2
 θ+cos 2
 θ=1) since cotangent is defined as cosine over sine

Answer (1)

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