Siku-siki.
x° + 25° + 2x° + 5° = 90°
3x° + 30° = 90°
3x° = 90° - 30°
3x° = 60°
x° = 60° / 3
x° = 20°
x = 20
Sudut RQS = (2x + 5)° = (2(20) + 5)° = 45°.
A. 45°.
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Siku-siki.
x° + 25° + 2x° + 5° = 90°
3x° + 30° = 90°
3x° = 90° - 30°
3x° = 60°
x° = 60° / 3
x° = 20°
x = 20
Sudut RQS = (2x + 5)° = (2(20) + 5)° = 45°.
A. 45°.