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April 24, 2024, 06:38:51 pm
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Author Topic: A road rises 15 cm for every 2 m travelled horizontally. Find the angle of slope  (Read 600 times)  Share 

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thatdumbstudent

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A road rises 15 cm for every 2 m travelled horizontally. Find the angle of slope
« on: August 28, 2019, 07:18:36 pm »
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I used tan and got 82 degrees but the answer says 4 degrees....
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DrDusk

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Re: A road rises 15 cm for every 2 m travelled horizontally. Find the angle of slope
« Reply #1 on: August 28, 2019, 07:21:05 pm »
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Quote from: thatdumbstudent on August 28, 2019, 07:18:36 pm
I used tan and got 82 degrees but the answer says 4 degrees....
You need to have both of them in the same units. You used tan theta but you forgot to convert the 15cm to meters or the 2m to cm. You need to have both as the same units.
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thatdumbstudent

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Re: A road rises 15 cm for every 2 m travelled horizontally. Find the angle of slope
« Reply #2 on: September 01, 2019, 09:31:03 am »
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Quote from: DrDusk on August 28, 2019, 07:21:05 pm
You need to have both of them in the same units. You used tan theta but you forgot to convert the 15cm to meters or the 2m to cm. You need to have both as the same units.

oh my god i totally looked over this ... definitely suites my username... thank you! ;D
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