Question

I know how to do it but don’t have a calculator with the trig option sin-1 so can someone help me

Answer 1

Answer:

x = 4.9 cm

Step-by-step explanation:

Note that sin theta = (opp side) / (hypotenuse), and that:

hypotenuse      (opp side)

------------------ = -----------------

         1                sin theta

and so:

hypotenuse      (opp side)                                           4 cm

------------------ = -----------------  or  hypotenuse = ---------------------------- = x

         1                sin theta                                     sin (55 degrees)

   

                     4 cm

Thus, x =  --------------- = x = 4.88 cm or (to 1 DP)        x = 4.9 cm

                    0.819