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

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

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step-by-step explanation:

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