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Гаука00
@Гаука00
July 2022
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помогите пожалуйста (вычисление)
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Lesben
A)sin(-1350) = sin (-3.360 - 270)=sin(-270) = - sin 270= -(-1)=1
b)cos 720= cos (2.360)=cos 0 = 1
c)tg 900= tg (5.180) = tg 0 = 0
d)cotg (-450) = cotg ( -360-90)=cotg (-90)=0
e)sin(19pí/6) = (12pí/6 + 7pí/6) = sin(7pí/6)=- 1/2
f)cos 11pí/2 = cos(8pí/2+3pí/2)=cos 3pí/2 = 0
g)tg 16pí/3 = tg (15pí/3 + pí/3)=tg pí/3 = odm. iz 3
h)cotg(-4/3pí) = cotg ( -3/3pí -1/3.pí) = cot (-1/3.pí)=- 1/3. odm. iz 3
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Answers & Comments
b)cos 720= cos (2.360)=cos 0 = 1
c)tg 900= tg (5.180) = tg 0 = 0
d)cotg (-450) = cotg ( -360-90)=cotg (-90)=0
e)sin(19pí/6) = (12pí/6 + 7pí/6) = sin(7pí/6)=- 1/2
f)cos 11pí/2 = cos(8pí/2+3pí/2)=cos 3pí/2 = 0
g)tg 16pí/3 = tg (15pí/3 + pí/3)=tg pí/3 = odm. iz 3
h)cotg(-4/3pí) = cotg ( -3/3pí -1/3.pí) = cot (-1/3.pí)=- 1/3. odm. iz 3