Question

Calcule o Seno, Cosseno e Tangente de 7Pi sobre 12

Answer 1

7pi/12》7(180)/12》1360/12》105

seno 7pi/12
seno 105
sen(60 + 45)
sen60 . cos46 -+ cos60 . sen45
\/3^2 . \/2/3 + 1/2 . \/2/2
\/6/4 + \/2/4
\/6 + \/2/4

cos 7pi/12
cos105
cos(60+45)
cos60 . cos45 - sen60 . sen45
1/2 . \/2/2 - \/3/2 . \/2/2
\/2/4 - \/6/4
\/2 - \/6/4

tg 7pi/13
tg 105
tg(60+45)
tg60 + tg45 / 1 - tg60 . tg45
\/3 + 1 / 1 - \/3 .1
\/3 + 1 / 1 - \/3
(\/3+1 / 1-\/3).(1+\/3 / 1+\/3)
(\/3 + 1)^2 / 1^2 - (\/3)^2
3+2\/3+1 / 1 - 3
4 + 2\/3 / (-2)
-2 -\/3 = tg 105