sinα = 15/17
tgα = 1 7/8
сtgα = 8/15
Объяснение:
sinα = √(1 - cos²α) = √(1-64/289) = √((289-64)/289) = √225/289 = 15/17
tgα = sinα /cosα = 15/17 : 8/17 = 15/17 · 17/8 = 15/8 = 1 7/8 = 1,875
сtgα = 1/tgα = 1 / (15/8) = 8/15
sinα = 15/17
tgα = 1 7/8
сtgα = 8/15
Объяснение:
sinα = √(1 - cos²α) = √(1-64/289) = √((289-64)/289) = √225/289 = 15/17
tgα = sinα /cosα = 15/17 : 8/17 = 15/17 · 17/8 = 15/8 = 1 7/8 = 1,875
сtgα = 1/tgα = 1 / (15/8) = 8/15
sinα = 15/17
tgα = 1 7/8
сtgα = 8/15