okay the ^-1 means the inverse of it.
and when i write 'pi' its supposed to be the pi symbol i just couldnt find it.
please help i need to understand how to do these i learn very well by example and i need answers to study these for finals
need the answers in radians pleeeeeease
inverse just doesnt means 1 upon something it means inverse of a function which is an entirely diff thing form reciprocals.....like we have sin30 degree or sin(pi/6)[pi/6 is the radian form of 30 degree] sin30=1/2 but if we'll have inverse of it then sin(inverse)1/2 wud be 30 degree..likewise for sin(inverse)-1/2 we'll have the answers as -pi/2..and this wud depend upon principle value of that particular function...for sin it is -pi/3 to pi/2..that means answer of any sin inverse function can only be got within this interval...like for other trigo ratios u can find principal values....