sine, cosine, tangent...?

Question

if the adjacent is 5.6 and hypotenuse is 15.26, how do i get the cos in degrees? i divided 5.6/15.26 but i don't know how to convert that to degrees.

Answer 1

That will give you the ratio adj to hyp.
You then need to inverse cosine it:

cos^-1 (5.6/15.26) = 68.5°

(If you get a different answer to this, then make sure that you use brackets around the quotient, and also that your calculator is in degree mode).

Answer 2

you dont' convert you do the following :
now you have known that cos the angle = 5.6/15.26
use the calculator to find the measure of angle having this cosine that's by pressing:
shift cos ( 5.6/15.26)
you will see on the screen cos-1(5.6/15.26) = 68.4709
to convert into degrees min , sec
use the key o ' ''
it gives 68o 28' 15''
hope that helpppsss

Answer 3

adjacent: 5.6

hypotenuse 15.26

opposite: ???

Since you're finding the cosine, you would follow the formula cos(x) = adj./hyp., where x will be your angle.

Plugging into that equation:

cos(x) = 5.6/15.26

cos^-1(5.6/15.26) = about 68.47097717 degrees.

If you had a scientific calculator, that's the answer you would get.

Answer 4

if you have a scientific calculator you can usually press "second" then "cos(5.6/15.26)" and it will come up or if you have a table look for the decimal answer that youget from doing (5.6/15.26) it will give you an estimation if you have neither i sorrry but i don't know how else you can find it

Answer 5

You don't convert that to degrees.
You find the cosine of(5.6/15.26) and
then take the cos^(-1) to get the angle.

Answer 6

No, you don't "convert" that into degrees. Whatever fraction you get is the common cosine of all angles of a certain measure. You need a reference table to match that fraction with the correct angle measure. Or, use the inverse cos function on your scientific calculator.

Answer 7

you have to take the inverse cos of that.

See the equation is cos x = adj/hyp, where x is the actual angle in degrees and adj and hyp are teh side lengths.

To do this on your calculator, it is most likely 2nd function, then cos. depends on your calculator though.
It looks like cos^-1.

Hope that helps.

In this case, the degree value is 68.47 degrees.

Oh, if you are using a computer calculator, you have to check the little 'inv' box on the top left then click cos.

Answer 8

You need a calculator to find most angles from a trigonometric ratio. For this one you would use the [cos^(-1)] function, putting in the value that you have just calculated.
The angle comes to 68.47 deg.

Answer 9

You'll need to use a calculator (preferably scientific or graphing).