Odpowiedź :
blicz pozostałe wartosci fuznkcjii trygonometrycznych wiedząc że sinL równy czztery siódme
sinL =4/7
4²+x²=7²
x²=49-16
x²=33
x=√33
cos L=√33/7
tgL= 4/√33=4√33/33
ctgL=√33/4
sinL =4/7
4²+x²=7²
x²=49-16
x²=33
x=√33
cos L=√33/7
tgL= 4/√33=4√33/33
ctgL=√33/4
sinα = 4/7
sin²α + cos²α = 1 [jedynka trygonometryczna]
cos²α = 1 - sin²α = 1 - 16/49 = 33/49
cosα = √33/7
tgα = sinα/cosα = [4/7]/[√33/7] = 4/√33 = 4√33/33
ctgα = 1/tgα = 33/4√33 = √33/4
sin²α + cos²α = 1 [jedynka trygonometryczna]
cos²α = 1 - sin²α = 1 - 16/49 = 33/49
cosα = √33/7
tgα = sinα/cosα = [4/7]/[√33/7] = 4/√33 = 4√33/33
ctgα = 1/tgα = 33/4√33 = √33/4