Answer:
c = 43
Step-by-step explanation:
sin theta = opposite side / hypotenuse
sin 28 = 20/c
Multiply each side by c
c sin 28 = 20/c *c
c sin 28 = 20
Divide each side by sin 28
c sin 28 /sin 28 = 20/sin 28
c = 42.60108936
To the nearest whole number
c = 43
