АК=х; ВК=20-х.
СК²=АК·ВК.
х(20-х)=25,
х²-20х+25=0,
х1=10+5√3≈18,7
tgА=5/18,7=0,27
∠А=15°.
∠В=90-15=75°.
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АК=х; ВК=20-х.
СК²=АК·ВК.
х(20-х)=25,
х²-20х+25=0,
х1=10+5√3≈18,7
tgА=5/18,7=0,27
∠А=15°.
∠В=90-15=75°.