bonjour
1) DH² = 4 ² + 3 ²
DH² = 16 + 9 = 25
DH = √25 = 5
DH = 5 m
angle HDC
Tan HDC = 3 /4
Tan 3/4 = 37 ° arrondi au ° près
angle DHC = 180 - ( 90 + 37 ) = 53°
f (x) = 4 x/2 = 2 x
g (x) = 12 * 4 - 2 x = 48 - 2 x
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bonjour
1) DH² = 4 ² + 3 ²
DH² = 16 + 9 = 25
DH = √25 = 5
DH = 5 m
angle HDC
Tan HDC = 3 /4
Tan 3/4 = 37 ° arrondi au ° près
angle DHC = 180 - ( 90 + 37 ) = 53°
f (x) = 4 x/2 = 2 x
g (x) = 12 * 4 - 2 x = 48 - 2 x