Hello help please Express (3)/(5) of a right angle triangle to radian measure and can some anybody help me by looking one old question from my profile help please​

Question

Hello help please

Express

`(3)/(5)`
of a right angle triangle to radian measure and can some anybody help me by looking one old question from my profile help please​

Answer 1

`(3\pi )/(10)`

Explanation:

To express degrees in radians

radian measure = degree measure ×
`(\pi )/(180)`

`(3)/(5)` of a right angle

=
`(3)/(5)` × 90° = 54° , then

radian = 54 ×
`(\pi )/(180)` =
`(54)/(180)` × π =
`(3)/(10)` × π =
`(3\pi )/(10)`

Answer 2

a right angle is 90°, or 1/4 of a circle.

3/5 * 1/4 = 3/20

radian measure is the length of the circumference of this part of the circle.

a full circumference of a circle would be 2*pi*r, also expressed as 2 rad * r

now let's multiply the full thing with the 3/20 from earlier to just get the desired fraction:

6/20 rad * r

= 3/10 rad * r

of course a solution in cm or inch still depends on the radius here, wich could be just plugged in at will