If - are two values of - satisfying the equarion cos -a - sin -a - 1c- then prove - cos- - -2cos- - -2 - ca

tan α2 = t_1 #160; , tan β2 = t 2 are the roots of t quadratic b (a + c ) t^2 2act + b (a c ) #160; = 0 #160;Where t = tan ...

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Trigonometric Ratios for Sum of Two Angles

If α,β are ...

Question

If $α, β$ are two values of $θ$ satisfying the equarion $\frac{cos θ}{a} + \frac{sin θ}{a} = \frac{1}{c},$ then prove -
$\frac{cos (\frac{α + β}{2})}{cos (\frac{α - β}{2})} = \frac{c}{a}$

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