Question

According to your graphing calculator, what is the approximate solution to the trigonometric inequality
cos(0.65x) > 0.45 over the interval 0

Answer 1

Answer:

B the answer with 1.6985

Step-by-step explanation:

did it on graphing calc

Answer 2

The solution of the inequality is [0, 1.699].

We will graph y=cos(0.65x)-0.45 using a calculator. Image 1.

Then we draw the boundary x=0 and x=$2\pi$ on the same graph. And we try to find where y>0 on that graph. Image 2.

From the graph we see that y>0 that means cos(0.65x) > 0.45 is over the interval [0, 1.699].

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