Find the reference angle of 10pi/13

3π/13

Step-by-step explanation:

In order to find the reference angle of a given angle, first of all, its quadrant is determined

In order to determine the quadrant,

10π/13=10(180)/13

=138.46

As the given angle belongs to 2nd quadrant, it will be subtracted from 180 degrees also denoted by pi.

So,

Reference angle for 10π/13= π-10π/13

=(13π-10π)/13

=3π/13

So the reference angle for 10π/13 is 3π/13 ..

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step-by-step explanation:

at least i think its