Question

A wheelchair ramp is to be built beside the steps to the campus library. Find the angle of elevation of the 26​-foot ​ramp, to the nearest tenth of a​ degree, if its final height is 6 feet.

Answer 1

The height (the opposite side of the triangle) is 6 and the hypotenuse is 26.
The sine of that angle = opposite/hypotenuse
The sine of that angle = 6 / 26
To find the angle, look up the ARC SINE of (6/26)

Answer 2

Can you try and solve that?

Answer 3

I am dividing 6 by 26 right?

Answer 4

correst

Answer 5

or correct even LOL

Answer 6

0.230

Answer 7

correct?

Answer 8

Yes, and now you have to look up the arc sine of .230
The arc sine means the angle whose sine is a certain value.

For example, the sine of 45 degrees is .707
So, the arc sine of .707 is 45 degrees.

Do you know how to look up an arc sine?

Answer 9

your saying with my calculator? pressing second then it sine-1 ?

Answer 10

I think that's how the calculator key would read:
sin^-1

Answer 11

yeah

Answer 12

unfortunately though i do not have my calculator with me

Answer 13

Okay, there's an online calculator right here:
http://www.1728.org/trigcalc.htm

Answer 14

ok thanks

Answer 15

Input .230 then click the "asin" button.

Answer 16

13.297

Answer 17

13.297 degrees is correct

Answer 18

thanks :)

Answer 19

glad to help out

Answer 20

do you have any websites or advice or anything else that would help me out with this material to get more practice

Answer 21

Well there's my website (which you just visited).
If you look at the graphic at the top of the page, you'll see all 6 trigonometric definitions.
Here's a page for beginners:
http://www.1728.org/trigtutr.htm

Answer 22

ok thanks! hope this helps

Answer 23

Thank you - it should be of some help. :-)

Answer 24

welcome to os