Prove 2 sin2 5-4 - 2 cos2 7 -4 - 2 2 -3 - 10

2sin ^25π4+2cos ^27π4+2 ^2π3 =2sin ^2 ( π +π4 )+2cos ^2 ( 2π π4 )+2(2)^2 =2 ( sinπ4 )^2+2cos ^2π4+2(4) =2 ( 1√(2) )^2+2 ( 1√(2) )^2+8 ...

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Circular Measurement of Angle

Prove 2 sin...

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Prove $2 {sin}^{2} \frac{5 π}{4} + 2 {cos}^{2} \frac{7 π}{4} + 2 {sec}^{2} \frac{π}{3} = 10$

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Prove that:

$2 {sin}^{2} \frac{3 π}{4} + 2 {cos}^{2} \frac{π}{4} + 2 {sec}^{2} \frac{π}{3} = 10$

2 {sin}^{2} \frac{3 π}{4} + 2 {cos}^{2} \frac{π}{4} + 2 {sec}^{2} \frac{π}{3} = 10

2 {sin}^{2} \frac{3 π}{4} + 2 {cos}^{2} \frac{π}{4} + 2 {sec}^{2} \frac{π}{3} = 10

4 sin \frac{π}{6} {sin}^{2} \frac{π}{3} + 3 cos \frac{π}{3} tan \frac{π}{4} + {cosec}^{2} \frac{π}{2} = 2 {sec}^{2} \frac{π}{4}

\frac{9!}{6! \times 3!} + \frac{9!}{5! \times 4!} = \frac{10!}{4! \times 6!}

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