s-1)tan(arctan2+arctan3)=? (-1)
s-2)x-y=60 ise (cosx+cosy)2 + (sinx+siny)2=? (3)
s-3)tanx+tany =1 ve cosx.cosy=√2/2 ise x+y=? (135)
s-4)A=cos(arccos3/5 +arcsin5/13) ise anın değeri? (16/65)
s-5)B=tan(arcsin2/√7 -arccos2/√7) ise b=? (√3/12)
s-6)f(x)= sin5x/sinx -cos5x/cosx ise f(15)=? (2√3)