A^2-36=5a A. {4,-9} B. {5+√61/2, 5-√61/2} C. No solution D. {9,-4}
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= 12 + (- 6)(n - 1 )
This is an arithmetic sequence with n th term
=
+ (n - 1)d
here d = - 6 - 0 = 0 - 6 = 6 - 12 = -6 and = 12, hence
= 12 + (- 6)(n - 1)
use this formula to find the 30 th term
= 12 + (- 6 × 29) = 12 - 174 = - 162
x is the number of students in the class in total
The trigonometric function gives the ratio of different sides of a right-angle triangle. The area of the triangle is 55.4256 ft².
<h3>What are Trigonometric functions?</h3>The trigonometric function gives the ratio of different sides of a right-angle triangle.
where perpendicular is the side of the triangle which is opposite to the angle, and the hypotenuse is the longest side of the triangle which is opposite to the 90° angle.
For the given triangle the length of AB and BC can be written as,
Now, the area of the triangle is,
Area of triangle = 0.5× 8 × 13.8564 = 55.4256 ft²
Hence, the area of the triangle is 55.4256 ft².
Learn more about Trigonometric functions:
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