how to find out the value of sine inverse 0.7518 without using calculator? Share with your friends Share 0 Aditi Vijay answered this You cannot find value of sin-1 (0.7518) without using calculator. The value of sin-1 (0.7518) is -0.6326. 1 View Full Answer Arunabha Niyogi answered this i don't think you can calculate that without calculator -2