Provide an appropriate response.A shadow cast by a tree is 27 feet long when the angle of inclination toward the sun is 40°. How tall is the tree? Round to four significant digits.
A. 32.18 ft
B. 17.36 ft
C. 22.66 ft
D. 35.25 ft
Answer: C
Mathematics
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Find the exact value of the expression.sin-1 
A. 
B. 
C. 
D. 
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Find the indicated value.Let f(x) = 4x. Find x when f(x) = 
.
A. -2 B. -1 C. 2 D. 1
Mathematics
Solve the system of equations using substitution.
A. x = 5, y = 4; x = 4, y = 5 or (5, 4), (4, 5) B. x = 10, y = 2; x = 2, y =10 or (10, 2), (2, 10) C. x = 6, y = 3; x = 3, y = 6 or (6, 3), (3, 6) D. x = 20, y = 1; x = 1, y = 20 or (20, 1), (1, 20)
Mathematics
Use the given sets below to determine whether the statement is true or false.A = {1, 3, 5, 7}, B = {5, 6, 7, 8}, C = {5, 8}, D = {2, 5, 8}, U = {1, 2, 3, 4, 5, 6, 7, 8}.{5} ? D
A. True B. False
Mathematics