The surface area of a sphere is 900 square inches. what is the radius of the sphere?
recall the formula sa= 4(3.14)r^2.
15 inches
18 inches
30 inches
60 inches

the answers are  a) hypotenuse=13  b) sin x=12/13  c) cos y=12/13  d) ratio=1

Step-by-step explanation:

The picture in the attached figure we know that in the right triangle abc applying the pythagoras theoremfind the hypotenuse acac²=ab²+bc²ab=5bc=12soac²=5²+12²> 25+> 169ac=√> ac=13find the value of sin x sin x=opposite side angle x/hypotenuse opposite side angle x=bc hypotenuse=ac sin x=bc/> sin x=12/13find the value of cos y cos y=adjacent side angle y/hypotenuse adjacent side angle y=bc hypotenuse=accos y=bc/> cos y=12/13ratio sin x and cos y ratio=(12/13)/(12/13)=1 the values of sin x and cos y are the same because are complementary angles angle x +angle y=90°