Penjelasan dengan langkah-langkah:
[tex]\rm \angle\:\: K + \angle\:\: L=90^\circ[/tex]
[tex]\begin{aligned}\rm(2x-5)+(7x-4)&=90\\\rm 9x-9&=90\\\rm 9x&=90+9\\\rm 9x&=99\\\rm x&=\frac{99}{9}\\\rm x&=11\end{aligned}[/tex]
Maka pelurus [tex]\angle K[/tex]
ɵ = 180-(2x-5)
ɵ = 180-(2(11)-5)
ɵ = 180-(17)
ɵ = 163° ( c )
Jawab:
Besar pelurus sudut K adalah 163° (C)
Sudut saling berpenyiku = 90°
Sudut K + Sudut L = 90°
2x - 5 + 7x - 4 = 90°
9x - 9 = 90°
9x = 90° + 9°
9x = 99°
x = 99° : 9
x = 11°
Besar pelurus sudut K
= 180° - Sudut K
= 180° - (2x - 5)°
= 180° - (2(11) - 5)°
= 180° - (22 - 5)°
= 180° - 17°
= 163° (C)
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Verified answer
Penjelasan dengan langkah-langkah:
[tex]\rm \angle\:\: K + \angle\:\: L=90^\circ[/tex]
[tex]\begin{aligned}\rm(2x-5)+(7x-4)&=90\\\rm 9x-9&=90\\\rm 9x&=90+9\\\rm 9x&=99\\\rm x&=\frac{99}{9}\\\rm x&=11\end{aligned}[/tex]
Maka pelurus [tex]\angle K[/tex]
ɵ = 180-(2x-5)
ɵ = 180-(2(11)-5)
ɵ = 180-(17)
ɵ = 163° ( c )
Jawab:
Besar pelurus sudut K adalah 163° (C)
Penjelasan dengan langkah-langkah:
Sudut saling berpenyiku = 90°
Sudut K + Sudut L = 90°
2x - 5 + 7x - 4 = 90°
9x - 9 = 90°
9x = 90° + 9°
9x = 99°
x = 99° : 9
x = 11°
Besar pelurus sudut K
= 180° - Sudut K
= 180° - (2x - 5)°
= 180° - (2(11) - 5)°
= 180° - (22 - 5)°
= 180° - 17°
= 163° (C)