If sinr=1÷2root 2 then value of r is
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sinr=1\2√2
sinr =1\2*1\√2
sinr=1/2*sin45°
sin and sin should be cancelled ,then
r= 22.5
sinr =1\2*1\√2
sinr=1/2*sin45°
sin and sin should be cancelled ,then
r= 22.5
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