銳角三角比|tg50度-1|+根號(hào)（tg^250度-2根號(hào)（3）tg50度+3）=|tg50度-1|+|tg50度-根號(hào)3|=tg50度-1+根號(hào)3-tg50度=根號(hào)3-12x^2+3x-2=0(2x-1)(x+1)=0sina=x=1/2或-1a在rt三角形abc中所以sina=1/2a=30度tana=（√3）/3{0}2，數(shù)學(xué)銳角的三角比∵sinα=1/3∴cosα=√(12-(1/3)2)=√(8/9)=2√2/3∴tanα=stnα/cosα=(1/3)/(2√2/3)=1/(2√2)=√2...