Write the ratios for sin A and cos A.

The correct answer is A. Sin A= 3/5 cos A = 4/5

answer: 4  

the square root of 16 is 4. it is a very simple mathematic concept. a square root when a number multiplied by itself will result in a number. here, the number 16 comes when 4 is multiplied by 4. hence the square root of 16 is 4. you can always figure out a square root by the inverse operation of squaring.  

yep b and c r the correct got it! : )