What is cos(43.17t-2.7) ?

The solution to cos(43.17t-2.7) is -0.90407…cos(43.17t)+0.42737…sin(43.17t)

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simplify cos(43.17t-2.7)

simplify

cos (43.17 t - 2.7)

- 0.90407 \dots cos (43.17 t) + 0.42737 \dots sin (43.17 t)

Solution steps

cos (43.17 t - 2.7)

Rewrite using trig identities

= - 0.90407 \dots cos (43.17 t) + 0.42737 \dots sin (43.17 t)

cos (\frac{θ}{2} + 3 0^{\circ})

3 \cdot cos (- x) - 2 \cdot cos (x)

\frac{1}{3} cos (2 t - 2 π)

\frac{1}{2} (- cos (x^{2} + π))

cot (- x) cot (\frac{π}{2} - x)

What is cos(43.17t-2.7) ?
The solution to cos(43.17t-2.7) is -0.90407…cos(43.17t)+0.42737…sin(43.17t)