Suppose a pilot flies 50.0 km in a direction 60^o 60 degree) north of east and then flies 40.0km in a direction 15^o (15 degree) north of east, Find her total distance from the starting point and the direction of the straight-line path to the final position

Your answer is 1.5 hope i  

Year  1936,  lehman predicted that the earths 'inner core' is solid. she observed that the seismic signals during her study were bent and did not pass through instead bouncing back. later it was confirmed that the earth's inner core was solid made up of nickel-iron and had a molten outer core.