Math Is Fun Forum

xanthus

Member

Registered: 2009-02-04

Posts: 2

help

The length  X is  412cm the height Y is 56 cm but how do I work out the angle of the slope

mathsyperson

Moderator

Registered: 2005-06-22

Posts: 4,900

Re: help

You can find the gradient of that slope by dividing the height by the length: 56/412 ≈ 0.136.
The tan function converts angle into gradient, which means you can convert gradient into angle with tan[sup]-1[/sup].

Working with degrees, that means the slope is ≈ 7.74[sup]o[/sup].
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Why did the vector cross the road?
It wanted to be normal.

xanthus

Member

Registered: 2009-02-04

Posts: 2

Re: help

I hope I measured the gable end wrong  on my house as I need a slope of at least 12 degree's for the product I want to fit to my low pitched roof. That's the figure I got two. The length is to the cnter of the gable 4.12m or 412cm the height is counting blocks down to start of slope giving approximate height of 56cm.

Thanks I will remeasure again in better light

Last edited by xanthus (2009-02-04 06:47:58)