Answer:
The reciprocal of 5 is 1/5. Every number has a reciprocal except for 0. There is nothing you can multiply by 0 to create a product of 1, so it has no reciprocal. Reciprocals are used when dividing fractions.
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sketch the situation
a trigonometric function that is a relation between the angle of elevation and the 2 sides of the rectangles is the tan


find the inverse

after rounding the angle of elevation is 34º.
The prime factorization is 2×5
C is the hypotenuse (or AB if they write it that way). The hypotenuse is the longest side and is always across from the right angle in a right triangle.