Answer:
Explanation:
1. Use the Pythagorean theorem

In the Pythagorean Theorem equation, a^2 + b^2 = c^2, the two sides called a and b are the legs which are the sides that form the right angle. The side called c is the hypotenuse and is the side opposite the right angle.
In this problem, the legs are x and 6.2 m. Those are called a and b.
The hypotenuse is 12.7 m which is c.






2.





3. The triangle has a 45-deg angle and a 90-deg angle.
45 + 90 + m<3 = 180
m<3 = 45
The third angle also measures 45 deg. This is a special case called 45-45-90 triangle. The sides opposite the congruent angles are congruent, so x = y. Now we can use the Pythagorean theorem.






