Find the missing side of a right triangle whose hypotenuse is 5 if one of the sides of the triangle is 3.?

Question

i do not know how to do this

Answer 1

sqrt(25-9)=4

Answer 2

You start with a generic right angled triangle. The hypotenuse is labeled c. The bottom of the triangle is b. And the remaining side is labled a. Now draw squares off each side of the triangle. Take the square from side b and insert it in the center of the square side c. The remaining edge of the side c square is the same area as the side a square. This proves that a^2+b^2=c^2.
a^2 + b^2 = c^2 where c is the hypotenuse while a and b are the legs of the triangle.
If you want to learn more about Pythagorean theorem, go to http://en.wikipedia.org/wiki/Pythagorean_theorem

Answer 3

you just fill in for a^2 + b^2 = c^2 . the hypotenuse is c and the side could be a or b. lets go with b. so you have a^2 + 3^2 = 5^2. find 3^2 and 5^2 and you have a^2 + 9 = 25. subtract 9 from both sides to get a^2 = 16. then find the square root of 16. and you have a = 4. 4 is the missing side

Answer 4

Know your special triangles.

this is a 3-4-5 triangle

whenever you have the hypotenuse as 5, and one of the other sides is 3, the other side is 4, and vice versa.

otherwise use the Pythagorean theorem

a(squared) + b(squared)= c(squared)

c is the hypotenuse always
a and b are the two other sides.

Answer 5

in a right angled triangle
square of hypotenuse= sum of the square of other 2 sides
5square=3square+xsquare
25=9+xsquare
xsquare=25-9
xsquare=16
x=4

Answer 6

Use pythagorean theorem & algebra *Pythagorean* a= side one b=side 2 c=hypotenuse a squared + b squared = c squared 5 squared + b squared= 13 squared 25+ b squared=169 b squared=one hundred forty four b= 12

Answer 7

a^2 + b^2 = c^2 (Pythagorean theorom)

a and b are the sides, c is the hypotenuse.

so you have:
a^2 + 3^2 = 5^2

Now solve for a and that is the length of the missing side!

Answer 8

4.

That is a special type of right triangle known as "3,4,5". This is a good combination to memorize.

Answer 9

a squared plus b squared = c squared
3 squared plus b squared = 5 squared
9 plus b squared = 25
b squared = 16
b = 4

Answer 10

see here for more on Pythagorean theorem http://www.algebra.com/~pavlovd/wiki/Pythagorean_theorem