Question

geometry help with right triangles and trigonometry

Answer 1

please help im stuck

Answer 2

You have a special right triangle called a 45-45-90 right triangle.
Do you know what that name means?

Answer 3

no i dont

Answer 4

I'm talking about the first problem.

Answer 5

Do you know that the sum of the measures of the angles of a triangle is 180?

Answer 6

yeah

Answer 7

Look at the first triangle. One angle is 90 degrees. One angle is 45 degrees. What is the third angle?

Answer 8

45

Answer 9

Right. The three angles of the triangle measure 45 deg, 45 deg and 90 deg. That is what a 45-45-90 right triangle is.

Answer 10

Now we need to learn something about a 45-45-90 triangle that will help you with your problem.

Answer 11

ok what is it

Answer 12

Do you know the Pythagorean theorem?

Answer 13

no i think i forgot

Answer 14

In a right triangle, with sides a and b (called legs) forming the right angle, and side c being the hypotenuse (side opposite the right angle), the Pythagorean theorem states:
a^2 + b^2 = c^2

Answer 15

There is one more thing you need to know.
In a triangle, if two angles are congruent (same measure) the opposite sides are congruent (same length.)

Answer 16

ohh ok so if it was 45 deg and 45 deg the 3er one will be 45 deg

Answer 17

nvm continue please

Answer 18

Since you have a 45-45-90 triangle, the two 45-degree angels are congruent, so the opposite sides are also congruent.