Evaluate sin 17-cos 73-

sin 17 #176; #160; 73 #176; #160; =tan( 90 #176; 73 #176; ) #160; #160; 73 #176; #160; = 73 #176; #160; 73 #176; #16 ...

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Sin(A+B)Sin(A-B)

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Question

Evaluate $\frac{sin 17^{\circ}}{cos 73^{\circ}}$

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