Evaluate 2 25o - 2 25 tan 2 25o -sin 2 25o

^225^0cos ec^225( tan^225 sin^225^0) = ^225^0sin^225^0( tan^225 sin^225^0) = ^225^0sin^225^0×tan ^225^0 ^225^0/sin^225^0×sin ^225^0 = ...

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Cos(A+B)Cos(A-B)

Evaluate 2 ...

Question

Evaluate ${cot}^{2} 25^{o} . {csc}^{2} 25 ({tan}^{2} 25^{o} - {sin}^{2} 25^{o})$

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\frac{{sec}^{2} (90^{o} - θ) - {cot}^{2} θ}{2 ({sin}^{2} 25^{o} + {sin}^{2} 65^{o})} + \frac{2 {cos}^{2} 60^{o} {tan}^{2} 28^{o} {tan}^{2} 62^{o}}{sin 30^{o} cos 60^{o}}

\frac{c o s e c^{2} 63^{o} + {tan}^{2} 24^{o}}{{cot}^{2} 66^{o} + {sec}^{2} 27^{o}} + \frac{{sin}^{2} 63^{o} + {cos}^{2} 63^{o} sin 27^{o} + sin 27^{o} sec 63^{o}}{2 (c o {sec}^{2} 65^{o} - {tan}^{2} 25^{o})}

\frac{tan 65^{o}}{cot 25^{o}}

{sin}^{2} 65^{o} + {sin}^{2} 25^{o} + {cos}^{2} 35^{o} + {cos}^{2} 55^{o}

cot θ tan (90^{o} - θ) - sec (90^{o} - θ) cosec θ + {sin}^{2} 25^{o} + {sin}^{2} 65^{o} + \sqrt{3} (tan 5^{o} . tan 45^{o} . tan 85^{o})

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