Question

Use a graphing calculator to solve the equation -3 cos t = 1 in the interval from 0 to 2p. Round to the nearest hundredth

Answer 1

i dont see why you'd need a graphing calculator for this o_0 a scientific + knowledge of trig is more than enough
so -3cost=1
cost=-1/3
\[t=\cos^{-1} (\frac{ -1 }{ 3 })\]
t=1.91,1.91+pi

Answer 2

and then i round it to 2 + pi?

Answer 3

nope t=1.91,1.91+pi or t={1.91,5.05} are already the answers

Answer 4

right thanks!

Answer 5

np :)

Answer 6

hey do you think you can help me with one more question?