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Mathematics 15 Online
OpenStudy (hhopke):

Find the value of X. Round your answer to the nearest tenth.

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.

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.

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

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

OpenStudy (anonymous):

x = 40 sec (58 deg} = 75.4832"

OpenStudy (anonymous):

75.5 rounded to the nearest 1/10 th

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