anonymous
  • anonymous
Solve the equation -3 cos t=1 in the interval from 0 < theta < 2pi. Round to the nearest hundredth.
Trigonometry
schrodinger
  • schrodinger
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campbell_st
  • campbell_st
so you need to divide both sides of the equation by -3 which results in \[\cos(t) = \frac{-1}{3}\] so you need to know there are 2 solutions, 2 quadrants where t is negative so just find \[\cos(t) = \frac{1}{3}\] so just solve for t as a 1st quadrant angle then use 2nd quadrant 180 - t 3rd quadrant 180 + t to find the 2 solutions

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