Question #7b448

Question

1532 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2016-11-03T03:00:00

The relationship of any angle to a ( first quadrant ) acute angle is

only contextual.

Explication:

in respect of $cos θ = cos (\frac{π}{3})$ $cos theta = cos (pi/3)$ , the principal value is the acute

angle $\frac{π}{3}$ $pi/3$ and the general value of theta is given by

$theta = 2npi+-pi/3, n =0, 1, 2, 3, ...$

Here, for $n = 1, theta = 7/3pi and 5/3pi$ .

So, in this context, $5/3pi$ and the principal acute-angle

value $pi/3$ are related, as solutions of $cos theta = cos (pi/3)$ .