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LariihSousa
@LariihSousa
December 2019
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Para cada figura, determine os valores de X e Y.❤❤❤
OBS: Só responda Se Souber
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Jayrobeys
Boa noite
a) achando x
sen45° = cat.op / hip
√2 / 2 = x / 9
2x = 9√2
x = 9√2 / 2
x = 6,36 aproximadamente.
achando y
cos45° = cat.aj / hip
√2 / 2 = y / 9
2y = 9√2
y = 9√2 / 2
y = 6,36 aproximadamente.
b) achando x
sen30° = cat.op / hip
1 / 2 = 10 / x
x = 20
achando y
cos30° = cat.aj / hip
√3 / 2 = y / 10
2y = 10√3
y = 10√3 / 2
y = 5√3
c) achando x..
sen45° = x / 7
√2 / 2 = x / 7
2x = 7√2
x = 7√2 / 2
achando y
cos45° = y / 7
√2 / 2 = y / 7
2y = 7√2
y = 7√2 / 2
d) achando x
sen60° = 12√3 / x
√3 / 2 = 12√3 / x
x√3 = 24√3
x = 24√3 / √3
racionaliza..
x = 24√3.√3 / √3.√3
x = 24.(√3)² / (√3)²
x = 72 / 3
x = 24
achando y
cos60° = y / x
1 / 2 = y / 24
2y = 24
y = 24 / 2
y = 12
3 votes
Thanks 1
LariihSousa
Muitíssimo Obg ❤❤❤❤❤❤
Jayrobeys
rsrs... Bons estudos..
LariihSousa
Vlw ❤❤❤❤❤
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Lista de comentários
a) achando x
sen45° = cat.op / hip
√2 / 2 = x / 9
2x = 9√2
x = 9√2 / 2
x = 6,36 aproximadamente.
achando y
cos45° = cat.aj / hip
√2 / 2 = y / 9
2y = 9√2
y = 9√2 / 2
y = 6,36 aproximadamente.
b) achando x
sen30° = cat.op / hip
1 / 2 = 10 / x
x = 20
achando y
cos30° = cat.aj / hip
√3 / 2 = y / 10
2y = 10√3
y = 10√3 / 2
y = 5√3
c) achando x..
sen45° = x / 7
√2 / 2 = x / 7
2x = 7√2
x = 7√2 / 2
achando y
cos45° = y / 7
√2 / 2 = y / 7
2y = 7√2
y = 7√2 / 2
d) achando x
sen60° = 12√3 / x
√3 / 2 = 12√3 / x
x√3 = 24√3
x = 24√3 / √3
racionaliza..
x = 24√3.√3 / √3.√3
x = 24.(√3)² / (√3)²
x = 72 / 3
x = 24
achando y
cos60° = y / x
1 / 2 = y / 24
2y = 24
y = 24 / 2
y = 12