Question
Find all solutions of the equation in the interval [0,2pi) .
cos(theta)=0.7125
If there is more than one solution, separate them with commas.
Do not round any intermediate computations, and round your answer(s) to the nearest hundredth.
Can someone help me with this? Thanks
cos(theta)=0.7125
If there is more than one solution, separate them with commas.
Do not round any intermediate computations, and round your answer(s) to the nearest hundredth.
Can someone help me with this? Thanks
Answers
bobpursley
my first thought is what unit for angles? degrees, radians? I have never liked computer instruction, they demand precision to the hundreth place, but don't specify the units. It makes a difference.
Cosine is positive in first, fourth quadrant.
arccos.7125=44.56 <u>degrees</u>
so in the fourth quadrant, it is
360-44.56 degrees.
Cosine is positive in first, fourth quadrant.
arccos.7125=44.56 <u>degrees</u>
so in the fourth quadrant, it is
360-44.56 degrees.