2000005404 | math4u.vsb.cz

SubArea:

Sine, cosine, tangent and cotangent

Level:

Project ID:

2000005404

Accepted:

0

Clonable:

0

Easy:

1

Which of the following statements is true?

\sin 700^{\circ} = \sin 200^{\circ}

\cos 550^{\circ} = \cos 10^{\circ}

tg 20^{\circ} = tg (- 20^{\circ})

\cos 520^{\circ} = \cos 20^{\circ}