1) По теореме Пифагора: sin^2(A) + cos^2(A) = sin(A) = 7/2cos(A) = √(1 - sin^2(A)) = √(1 - 49/625) = √(576/625) = 24/25
2) По теореме Пифагора: sin^2(B) + cos^2(B) = sin(B) = 1/√1cos(B) = √(1 - sin^2(B)) = √(1 - 1/17) = √(16/17) = 4/√17
3) По теореме Пифагора: sin^2(B) + cos^2(B) = cos(B) = 3/sin(B) = √(1 - cos^2(B)) = √(1 - 9/25) = √(16/25) = 4/5
1) По теореме Пифагора: sin^2(A) + cos^2(A) =
sin(A) = 7/2
cos(A) = √(1 - sin^2(A)) = √(1 - 49/625) = √(576/625) = 24/25
2) По теореме Пифагора: sin^2(B) + cos^2(B) =
sin(B) = 1/√1
cos(B) = √(1 - sin^2(B)) = √(1 - 1/17) = √(16/17) = 4/√17
3) По теореме Пифагора: sin^2(B) + cos^2(B) =
cos(B) = 3/
sin(B) = √(1 - cos^2(B)) = √(1 - 9/25) = √(16/25) = 4/5