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viktoriaviktoriaua
@viktoriaviktoriaua
August 2022
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помогите пожалуйста №1187,1188, 1189,1190
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dnepr1
Verified answer
1187) АВ = 2/sin 30° = 2/(1/2) = 4 м.
1188) α = arc tg(x/x) = arc tg 1 = 45°.
1189) АВ1 = АВ*cos 60° = 48*(1/2) = 24 см.
1190) α = arc sin(25/50) = arc sin(1/2) = 30°.
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Answers & Comments
Verified answer
1187) АВ = 2/sin 30° = 2/(1/2) = 4 м.1188) α = arc tg(x/x) = arc tg 1 = 45°.
1189) АВ1 = АВ*cos 60° = 48*(1/2) = 24 см.
1190) α = arc sin(25/50) = arc sin(1/2) = 30°.