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COS 10°=(90°-80°)=cos90°×cos80°+sen90°×sen80°
0×0,17+1×0,98=0,98
COS 80°=(90°-10°)=cos90°×cos10°+sen90°×sen10°
0×0,98+0,98×0,17=0,17
TG 10°=(80°-70°)=tg80°-tg70°/1+tg80°×tg70°
5,67-2,75/1+5,67×2,75
2,92/16,6=0,17
TG 80°=(85°-5°)=tg85°-tg5°/1-tg85°×tg5°
11,43-0,09/1+11,43×0,09
11,34/2,03=5,6
ESpero ter ajudado!!
0×0,17+1×0,98=0,98
COS 80°=(90°-10°)=cos90°×cos10°+sen90°×sen10°
0×0,98+0,98×0,17=0,17
TG 10°=(80°-70°)=tg80°-tg70°/1+tg80°×tg70°
5,67-2,75/1+5,67×2,75
2,92/16,6=0,17
TG 80°=(85°-5°)=tg85°-tg5°/1-tg85°×tg5°
11,43-0,09/1+11,43×0,09
11,34/2,03=5,6
ESpero ter ajudado!!
luccasMatheusDaSilva:
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