it equals <span>(−<span>12</span>)</span> because <span><span>cos<span>(<span>60∘</span>)</span></span>=<span>12</span></span>
Explanation:
The reference angle for <span>240∘</span> is <span>60∘</span> (since <span><span>240∘</span>=<span>180∘</span>+<span>60∘</span></span>)
<span>60∘</span> is an angle of one of the standard triangles with
<span><span>cos<span>(<span>60∘</span>)</span></span>=<span>12</span></span>
<span>240∘</span> is in the 3rd quadrant so (either by CAST or noting that the "x-side" of the associate triangle is negative)
<span><span>cos<span>(<span>240∘</span>)</span></span>=−<span>cos<span>(<span>60∘</span>)</span></span></span>
<span><span>cos<span>(<span>240∘</span>)</span></span>=−<span><span>12</span></span></span>
Find 6 intervals to use:
We can use 0-4, 5-9, 10-14, 15-19, 20-24 and 25-29
Then count the numbers from the list in each group:
0-4 there are 5 numbers in this group
5-9 there are 3
10-14 there are 3
15-19 there are 5
20-24 there are 2
25-29 there are 2
Now create the histogram, with the vertical axis labeled from 0 to 5 and the horizontal axis labeled with your six groups:
See attached picture:
Answer:
Jacki did not subtract 12 from 8 correctly i believe
Answer:
C
Step-by-step explanation: