Ametal frame is constructed in the form of an isosceles trapezoid. each base angle measures 80°, the length of the base is 7 feet, and each of the nonparallel sides is 5 feet long. determine the length of a diagonal brace to the nearest whole number. 5 ft 7 ft 8 ft 9 ft

1. Check the picture at the bottom.

2. ABCD is a right trapezoid so the diagonals have equal length. Lets find diagonal BD.

3. In triangle ABD we are given the length AB=7, AD=5 and m(A)=80°.

4. We use the cosine law:

5. Cosine of 80 can be found with a scientific calculator or in the internet as cos80=0,17

6.

square root of BD=7.88, so the answer is 8 feet.

the answer is. -82562234434584

step-by-step explanation:

describing distributions is one of the key skills you’ll need to earn a high score on the ap statistics exam. if you need proof of this, just flip through some past exam questions, which can be found at the collegeboard website. you’ll notice that the first free response question is almost always a question requiring you to look at a graph and describe it.

step-by-step explanation: just trying to get points sorry : (