Angle A is an acute angle in a right triangle

given that sin A = 7/25 what is the ratio for cos A

Cos = 24/25

7^2+24^2=25^2

Sin=opositeside/hyptonuse

cos=adjacentside/hyptoonse

try and draw a diagram

pretend we gots

acute angle is on left side

right angle is below obtuse angle

so sinA=7/25=left side/hypotonuse

so we need to find other side

pythagorean theorme

a²+b²=c²

7²+b²=25²

49+b²=625

b²=576

b=24

so

sinA=o/h

cosA=a/h

7=o

25=h

24=a

cosA=24/25