1003085708 | math4u.vsb.cz

SubArea:

Trigonometric equations and inequalities

Level:

Project ID:

1003085708

Source Problem:

Accepted:

1

Clonable:

1

Easy:

0

The arithmetic mean of all values of

θ

between

0^{\circ}

and

360^{\circ}

for which

\cos (θ - 20^{\circ}) = 0

is:

200^{\circ}

55^{\circ}

145^{\circ}

155^{\circ}