Number 21 is the first answer a.) 8
XZ = square root (16^3 + 63^2)
XZ = square root (256 + 3969)
XZ = square root (4225)
XZ = 65
sin(Z) = 16 / 65
answer is A. 16/65
Answer is C, just multiply and expand.
<span>The number 8.5 is being added. </span>
ST and WX are the same lines
