What is e^{3t}cos(t+pi) ?

The solution to e^{3t}cos(t+pi) is -e^{3t}cos(t)

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simplify e^{3t}cos(t+pi)

simplify

e^{3 t} cos (t + π)

- e^{3 t} cos (t)

Solution steps

e^{3 t} cos (t + π)

Rewrite using trig identities

= e^{3 t} (- cos (t))

Remove parentheses:

(- a) = - a

= - e^{3 t} cos (t)

sin (18 0^{\circ} - (θ + β))

sec (arcsec (e^{x}))

tan (- 3 x)

e^{\frac{1}{c o s ( x )}}

cos (- 1 (x))