How do you find the reference angle for $\frac{25 π}{4}$ $(25pi)/4$ ?

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Answer 1 · 2016-08-10T08:37:30

$\frac{π}{4}$ $pi/4$

$\frac{25 π}{4} = \frac{(6 \times 4) π}{4} + \frac{π}{4} = 3 \times (2 π) + \frac{π}{4}$ $(25pi)/4 = ((6 xx 4) pi)/4 + pi/4 = 3 xx (2pi)+pi/4$

so for functions with minimum period $2 π$ $2pi$ , the reference angle is $\frac{π}{4}$ $pi/4$

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