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Karla31
@Karla31
July 2022
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cos[tex] \alpha sina[tex]\alpha*ctga[tex] \alpha помогите пожалуйста
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логика2006
Cos ,sin ,ctg ,если 0<<(/2) и tg
= 2,4
ctga=1/tga=1/2.4=1/24/10=10/24=5/12
1/sin
²a=1+ctg²a
1/sin²a=1+25/144=169/144
1/sina=13/12
sina=12/13
cosa=√1-sin²a=√1-144/169=5/13
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Answers & Comments
ctga=1/tga=1/2.4=1/24/10=10/24=5/12
1/sin²a=1+ctg²a
1/sin²a=1+25/144=169/144
1/sina=13/12
sina=12/13
cosa=√1-sin²a=√1-144/169=5/13