Multiple choice general knowledge value of sinx where x=53 degree .75 .65 .80 .60 Reveal answer Fill a bubble to check yourself C Correct answer Explanation sin(53°) ≈ 0.7986, which rounds to 0.80. You can verify this using a calculator or trigonometric tables. The other values (0.75, 0.65, 0.60) do not match the actual sine of 53 degrees.