1003085605 | math4u.vsb.cz

SubArea:

Trigonometric equations and inequalities

Level:

Project ID:

1003085605

Accepted:

1

Clonable:

0

Easy:

0

Find the set of all

x \in R

for which

\cos (\frac{π}{4} - x) = 1

.

{\frac{π}{4} + 2 k π : k \in Z}

{\frac{π}{2} + 2 k π : k \in Z}

{\frac{π}{4} + k π : k \in Z}

{\frac{π}{2} + k π : k \in Z}