△ABC中sin^2A-sin^2C=根号2sinAsinB-sin^2B+则角C为

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△ABC中sin^2A-sin^2C=根号2sinAsinB-sin^2B+则角C为
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△ABC中sin^2A-sin^2C=根号2sinAsinB-sin^2B+则角C为
△ABC中sin^2A-sin^2C=根号2sinAsinB-sin^2B+则角C为

△ABC中sin^2A-sin^2C=根号2sinAsinB-sin^2B+则角C为
如果=右边是根号2倍的sinAsinB……
角C为45度