The length of the other leg is 20 ft.
a^2 x b^2 = c^2
21^2 x b^2 = 29^2
441 x b^2 = 841
b^2 = 841-441
b^2 = 400
b =

b = 20
Answer:
x = 7
Step-by-step explanation:
7 x 7 = 49
Using relations in a right triangle, it is found that the length of AC is of 6.43 inches.
<h3>What are the relations in a right triangle?</h3>
The relations in a right triangle are given as follows:
- The sine of an angle is given by the length of the opposite side to the angle divided by the length of the hypotenuse.
- The cosine of an angle is given by the length of the adjacent side to the angle divided by the length of the hypotenuse.
- The tangent of an angle is given by the length of the opposite side to the angle divided by the length of the adjacent side to the angle.
In this problem, the length of side AC is b, which is opposite to the angle of 40º, while the hypotenuse is of 10 in, hence:


Using a calculator:

More can be learned about relations in a right triangle at brainly.com/question/26396675
Answer:
945*134= 126630
Step-by-step explanation:
The units digit of the given exponential expression will be 6
<h3>Determining the units digit of an exponential expression</h3>
From the question, we are to determine the units digit of the given exponential expression
The given exponential expression is
4⁸⁰⁰
We know that
4¹ = 4
4² = 16
4³ = 64
4⁴ = 256
4⁵ = 1024
4⁶ = 4096
From above, we can observe that the units digit of the odd exponents is 4 while the units digit of the even exponents is 6.
The exponent of the given expression is 800. 800 is an even number.
Hence, the units digit of the given exponential expression will be 6
Learn more on Determining units digits here: brainly.com/question/15419249
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