Sin 270. Tg 135 градусов. 1 3sin 0 4cos 180. 1 3sin 0 4cos 180. Cos 225.
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1 3sin 0 4cos 180. Sin 360 - альфа. Cos(180-30). 1 3sin 0 4cos 180. 1 3sin 0 4cos 180.
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1 3sin 0 4cos 180. Cos 180. 1 3sin 0 4cos 180. Cos 90. Sin 180.
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1 3sin 0 4cos 180. 1 3sin 0 4cos 180. 1 3sin 0 4cos 180. Cos 90-альфа. 1 3sin 0 4cos 180.
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`=sin20`>0\\\\cos200`=cos(180+20)`=-cos20`<0\\\\tg310`=tg(360-50)`=-tg50`<0\\\\ctg(-400)=-ctg400=-ctg(360+40)=-ctg40<0\\\\sin(-7\pi/11)=-sin(7\pi/11)=-sin(%20\pi%20-3\pi%20/11)=-sin(3\pi/11)<0\\\\cos(31%20\pi/5)=cos(6%20\pi%20+\pi/5)=cos(\pi/5)>0 "Cos 180. Sin(180-a-b). 1 3sin 0 4cos 180. Cos 60. Cos 180.")
Cos 180. Sin(180-a-b). 1 3sin 0 4cos 180. Cos 60. Cos 180.
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Cos(180-x). Sin(180-30). Cos(180-2a). 1 3sin 0 4cos 180. Cos 135.
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Sin^2(180-a). 1 3sin 0 4cos 180. 1 3sin 0 4cos 180. Sin 180. 1 3sin 0 4cos 180.
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1 3sin 0 4cos 180. Sin(180-30). 1 3sin 0 4cos 180. Tg 135. 3 sin 2 120 -4cos180 +3tg135.
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1 3sin 0 4cos 180. 1 3sin 0 4cos 180. Cos 70. 1 3sin 0 4cos 180. Cos 225.
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1 3sin 0 4cos 180. 1 3sin 0 4cos 180. Cos 135. Cos 225. Sin^2(180-a).
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Cos 60. 1 3sin 0 4cos 180. Cos 135. Cos 180. 1 3sin 0 4cos 180.
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1 3sin 0 4cos 180. Sin(180-30). Cos 180. 1 3sin 0 4cos 180. Sin^2(180-a).
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Cos 180. Sin(180-30). 1 3sin 0 4cos 180. 1 3sin 0 4cos 180. Cos 225.
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Sin 270. 3 sin 2 120 -4cos180 +3tg135. 1 3sin 0 4cos 180. Cos(180-2a). 1 3sin 0 4cos 180.
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1 3sin 0 4cos 180. 1 3sin 0 4cos 180. Tg 135 градусов. 1 3sin 0 4cos 180. Cos 180.
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Tg 135 градусов. 1 3sin 0 4cos 180. 1 3sin 0 4cos 180. Sin(180-a-b). 1 3sin 0 4cos 180.
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Cos 70. 1 3sin 0 4cos 180. Cos(180-2a). Cos 225. 1 3sin 0 4cos 180.
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Cos 180. 1 3sin 0 4cos 180. 1 3sin 0 4cos 180. 1 3sin 0 4cos 180. 1 3sin 0 4cos 180.
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3 sin 2 120 -4cos180 +3tg135. 1 3sin 0 4cos 180. Cos 180. Cos(180-2a). 1 3sin 0 4cos 180.
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1 3sin 0 4cos 180. 1 3sin 0 4cos 180. 1 3sin 0 4cos 180. Cos 60. Cos 90.
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