Mathematics
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OpenStudy (hhopke):
Find the value of X. Round your answer to the nearest tenth.
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OpenStudy (hhopke):
|dw:1431063154441:dw|
OpenStudy (tkhunny):
Have you considered the Cosine Function?
OpenStudy (hhopke):
Yes, but when I did that on the test, my answer was marked wrong. This is for test corrections.
OpenStudy (hhopke):
I had gotten 80" before.
OpenStudy (tkhunny):
Demonstrate. Might be a rounding problem.
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OpenStudy (hhopke):
|dw:1431063662583:dw|
OpenStudy (hhopke):
That's what I did on the test.
OpenStudy (anonymous):
hello?
OpenStudy (anonymous):
can i have him when ur done?
OpenStudy (hhopke):
Okaaay... ask him, not me.
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OpenStudy (anonymous):
can you help me when ur done with her?
OpenStudy (tkhunny):
That makes no sense. \(\cos(58º)= \dfrac{40}{x}\).
It is only a coincidence that you were even close.
OpenStudy (hhopke):
Huh?
OpenStudy (tkhunny):
What class are you in?
OpenStudy (anonymous):
math
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OpenStudy (hhopke):
High School Geo, why?
OpenStudy (hhopke):
\[\cos 58=0.5\]
OpenStudy (hhopke):
and the cos = 40/x, so 0.5=40/x
Do a proportion and you should get 80.
OpenStudy (anonymous):
hop make sure you calc is on degrees not radians...
OpenStudy (anonymous):
@hhopke
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OpenStudy (anonymous):
x = 40 sec (58 deg} = 75.4832"
OpenStudy (anonymous):
75.5 rounded to the nearest 1/10 th