Evaluate- sin 2 63 o -sin 2 27 o cos 2 17 o -cos 2 73 o

sin ^ 2 63 ^ o +sin ^ 2 27 ^ o #160; #160; cos ^ 2 17 ^ o +cos ^ 2 73 ^ o #160; #160; =sin ^ 2 63 ^ o +cos ^ 2 63 ^ o #160; #160; ...

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Trigonometric Ratios of Compound Angles

Evaluate: si...

Question

Evaluate:
$\frac{{sin}^{2} 63^{o} + {sin}^{2} 27^{o}}{{cos}^{2} 17^{o} + {cos}^{2} 73^{o}}$

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\frac{sin θ cos θ sin (90^{o} - θ)}{cos (90^{o} - θ)} + \frac{cos θ sin θ cos (90^{o} - θ)}{sin (90^{o} - θ)} + \frac{{sin}^{2} 27^{o} + {sin}^{2} 63^{o}}{{cos}^{2} 40^{o} + {cos}^{2} 50^{o}}

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\frac{{cos}^{2} 20 + {cos}^{2} 70}{{sin}^{2} 59 + {sin}^{2} 31}

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