Sin= 3/4
cos=√1-sin² = √1-9/16 = √7/16 = √7/4
tg= sin/cos = 3/4 * 4/√7 = 3/√7=3√7/7
ctg= cos/sin = √7/4 * 4/3 =√7/3
Длина = 200см
ширина 200/4= 50см
периметр= 2(50+200)=500см=5 м
площадь 50*200=10000 смкв=1кв.м
8n+16n^2+16n^2-12n+12n-9=2
32n^2-4n-11=0
Log3<span> 18/(2+log</span>3<span> 2)=(log</span>3<span> 2 + log</span>3<span> 9)/(2+log</span>3<span> 2)=(log</span>3<span> 2+2)/(2+log</span>3<span> 2)=1
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