Question 1087900
.
ΔRST is a right triangle with m∠S = 90°. RS = 48, cos R =24/25 ; Find sin R.


<pre>
a. 7/24

b.25/24

c.7/25     <<<---===  sin(R) = {{{sqrt(1-cos^2(R))}}} = {{{sqrt(1-(24/25)^2)}}} = {{{sqrt((625 - 576)/625)}}} = {{{sqrt(49)/25}}} = {{{7/25}}}.
</pre>  
 
The info RS = 48 <U>is not relevant</U>. 


They put/include it with the only goal to confuse you.