1.3-bo'lim : Trig funktsiyalari

Quyidagilarning har birining aniq qiymatini kalkulyatordan foydalanmasdan aniqlang.

E'tibor bering, bu muammolarning maqsadi trig-funksiyalarning qiymatini qanday topishni o'rganish emas, balki birlik doirasi bilan sizga qulaylik yaratishdir, chunki bu trig tenglamalarini echishda zarur bo'lgan juda muhim mahoratdir.

1. \(\displaystyle \tan \left( {\frac{{3\pi }}{4}} \right)\)
2. \(\displaystyle \sin \left( {\frac{{7\pi }}{6}} \right)\)
3. \(\displaystyle \sin \left( { - \frac{{3\pi }}{4}} \right)\)
4. \(\displaystyle \cos \left( {\frac{{4\pi }}{3}} \right)\)
5. \(\displaystyle \cot \left( {\frac{{5\pi }}{4}} \right)\)
6. \(\displaystyle \sin \left( { - \frac{{5\pi }}{6}} \right)\)
7. \(\displaystyle \sec \left( { - \frac{\pi }{6}} \right)\)
8. \(\displaystyle \cos \left( {\frac{{5\pi }}{4}} \right)\)
9. \(\displaystyle \cos \left( {\frac{{11\pi }}{6}} \right)\)
10. \(\displaystyle \csc \left( {\frac{{11\pi }}{6}} \right)\)
11. \(\displaystyle \cot \left( { - \frac{{4\pi }}{3}} \right)\)
12. \(\displaystyle \cos \left( { - \frac{\pi }{4}} \right)\)
13. \(\displaystyle \csc \left( {\frac{{2\pi }}{3}} \right)\)
14. \(\displaystyle \sec \left( {\frac{{17\pi }}{6}} \right)\)
15. \(\displaystyle \sin \left( { - \frac{{23\pi }}{3}} \right)\)
16. \(\displaystyle \tan \left( {\frac{{31\pi }}{6}} \right)\)
17. \(\displaystyle \cos \left( { - \frac{{15\pi }}{4}} \right)\)
18. \(\displaystyle \sec \left( { - \frac{{23\pi }}{4}} \right)\)
19. \(\displaystyle \cot \left( {\frac{{11\pi }}{4}} \right)\)