What is cos(10t+11/12 pi) ?

The solution to cos(10t+11/12 pi) is (-sqrt(6)-sqrt(2))/4 cos(10t)-(sqrt(6)-sqrt(2))/4 sin(10t)

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simplify cos(10t+11/12 pi)

simplify

cos (10 t + \frac{11}{12} π)

\frac{- 6 - 2}{4} cos (10 t) - \frac{6 - 2}{4} sin (10 t)

Solution steps

cos (10 t + \frac{11}{12} π)

Rewrite using trig identities

= \frac{- 6 - 2}{4} cos (10 t) - \frac{6 - 2}{4} sin (10 t)

sec (arccot (\frac{x}{3}))

sin (- x - \frac{π}{2})

x cos (- \frac{467 π}{1800})

4 - 4 \cdot sin^{2} (x)

tan (arcsec (\frac{x}{9}))

What is cos(10t+11/12 pi) ?
The solution to cos(10t+11/12 pi) is (-sqrt(6)-sqrt(2))/4 cos(10t)-(sqrt(6)-sqrt(2))/4 sin(10t)