Question 1088729
7 tan alpha + cot alpha = 5 sec alpha
Multiply thru by cosine
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7sin + cos^2/sin = 5

7sin^2 + cos^2 = 5sin
6sin^2 + sin^2 + cos^2 = 5sin
6sin^2 + 1 = 5sin
6sin^2 - 5sin + 1 = 0
(3sin - 1)*(2sin - 1) = 0
etc.