求值,-√2.89,±√121/25,0.0196±√（-5）^2+12^2,√41^2-40^2

求值,-√2.89,±√121/25,0.0196±√（-5）^2+12^2,√41^2-40^2 求值：arccos(-√3/2) 求值：√0.36=（ ）；±√121/196=（ ）. 求值:cos(arcsin√3/2)= 求值arcsin(-√2/2)= 求值:arcsin(√3/3)= 求值tan(arcsin√2/2) 先化简再求值,a=1+√2 求值:arcsin(-√3/2)= 求值:(tan10°-√3)sin40° 求值：(tan10°-√3)sin40° 求值:1/sin10－√3/cos10 tan19+tan41+√3tan19tan41求值 求值：1.√1/b^2 (b √8求值或化简 求值:cos40*[1+(√3)tan10] 定积分求值问题∫x^2√(1-x^2 )dxa=0 b=1 为积分的上下限求值 化简求值（数学）先化简,再求值：,其中x=√2