Proszę o wyliczenie:
1) 2cos 1/2 L = √3
2) 3tg 5L = 1
3) ctg 1/2 L = √3
4) sin 3/4 L = 1/2
5) tg 1/4 L = √3/3
1)
2 cos ( 1/2) alfa = p(3)
cos (1/2) alfa = p(3)/2
(1/2) alfa = 30 stopni
alfa = 60 stopni
==============
3)
ctg (1/2) alfa = p(3)
============
4)
sin (3/4) alfa = 1/2
(3/4) alfa = 30 stopni / *( 4/3)
alfa = 40 stopni
================
5)
tg (1/4) alfa = p(3)/3
(1/4) alfa = 30 stopni
alfa = 120 stopni
===============
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1)
2 cos ( 1/2) alfa = p(3)
cos (1/2) alfa = p(3)/2
(1/2) alfa = 30 stopni
alfa = 60 stopni
==============
3)
ctg (1/2) alfa = p(3)
(1/2) alfa = 30 stopni
alfa = 60 stopni
============
4)
sin (3/4) alfa = 1/2
(3/4) alfa = 30 stopni / *( 4/3)
alfa = 40 stopni
================
5)
tg (1/4) alfa = p(3)/3
(1/4) alfa = 30 stopni
alfa = 120 stopni
===============