Values of Trigonometric Functions

Project ID: 
7100020181
Accepted: 
Type: 
Layout: 
Question: 
Match the values of trigonometric functions that are equal.
Question 1: 
$\cos 70^{\circ}$
Answer 1: 
$\sin 740^{\circ}$
Question 2: 
$\sin 41^{\circ}$
Answer 2: 
$\cos (-671^{\circ})$
Question 3: 
$\mathrm{cotg}\, 65^{\circ}$
Answer 3: 
$\mathrm{tg}\, 205^{\circ}$
Question 4: 
$\mathrm{cotg}\, \frac{7}{9}\pi$
Answer 4: 
$\mathrm{cotg}\, \left(-\frac29 \pi \right)$
Question 5: 
$\cos 10^{\circ}$
Answer 5: 

$\sin (-1000^{\circ})$

Question 6: 
$\cos (-999^{\circ})$
Answer 6: 
$\cos (441^{\circ})$
Question 7: 
$\mathrm{tg}\, 133^{\circ}23'$
Answer 7: 
$\mathrm{tg}\, 673^{\circ}23'$
Question 8: 
$\mathrm{cotg}\, \left(\frac25 \pi \right)$
Answer 8: 
$\mathrm{cotg}\, \left(-\frac35 \pi \right)$
Question 9: 
$\cos 45^{\circ}$
Answer 9: 
$\sin 405^{\circ}$