求求你们了,快点,有急用
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解:∵△AOB是直角三角形,∠B是90°
∴AB² + OB² =AO²
2² + OB² = 2√3²
OB=2√2
设B点坐标为(a,b)
∵B在第一象限 ∴a>0,b>0
S△AOB=1/2 x (AB x OB) = 1/2 x OA x b
AB x OB = OA x b
2 x 2√2 = 2√3 x b
b = 2√6 ÷3
b = 2√6/3
OB²178;=a²178; + b²178;
8 = a²178; + 24/9
a²178; = 48/9
a = 4√3/3
答:B点坐标为(4√3/3,2√6/3)
∴AB² + OB² =AO²
2² + OB² = 2√3²
OB=2√2
设B点坐标为(a,b)
∵B在第一象限 ∴a>0,b>0
S△AOB=1/2 x (AB x OB) = 1/2 x OA x b
AB x OB = OA x b
2 x 2√2 = 2√3 x b
b = 2√6 ÷3
b = 2√6/3
OB²178;=a²178; + b²178;
8 = a²178; + 24/9
a²178; = 48/9
a = 4√3/3
答:B点坐标为(4√3/3,2√6/3)
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