Given that sin (x) = 7/11, find cos (90-x). A. 4/11 B. 7/11 C. 11/7 D. 11/4

Based on the given equation above, get the value of x first so that this value can be substituted to the second equation. Value of x can be obtained by taking the arc sin of 7/11 which gives an answer of 39.52 degrees. Substituting this value to the second equation cos (90-39.52) gives an answer equals to 7/11