Without using a calculator, give the exact trigonometric function value with rational denominator.sec 45°
A. 
B. 
C. 1
D. 
Answer: A
Mathematics
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Find the area of the specified region.Shared by the cardioids r = 5(1 + sin ?) and r = 5(1 - sin ?)
A. 1625
B. 
(3? - 8)
C. 
(3? + 8)
D. 
(5? + 8)
Mathematics
Provide an appropriate response.Use a calculator to multiply, reduce answer to lowest terms and convert improper fractions to whole or mixed numbers: 
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.A tree casts a shadow 36 m long. At the same time, the shadow cast by a 49-centimeter tall statue is 90 cm long. Find the height of the tree. Round to the nearest tenth.
A. 66.1 m B. 18.1 m C. 19.6 m D. 64.6 m
Mathematics
Find det A using the method of cofactors.A = 
A. -47 B. 37 C. -42 D. 42
Mathematics