Answer:
c = 9.899
Explanation:
sin theta = opposite side/ hypotenuse
sin 45 = 7/c
Multiply each side by c
c sin 45 = 7/c *c
c sin 45 = 7
Divide by sin 45
c sin 45 /sin 45 = 7 /sin 45
c = 7 / sin 45
c=9.899494937
Rounding to the nearest thousandth
c = 9.899