Classify the angle as acute, right, obtuse, or straight.
A. Obtuse
B. Acute
C. Straight
D. Right
Answer: A
Mathematics
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For the complex number, state the real part, the imaginary part, and identify the number as real, pure imaginary, or nonreal complex.- 
A. Real part: 
; Imaginary part: -1; Real
B. Real part: 0; Imaginary part: -
; Pure imaginary
C. Real part: -
; Imaginary part: 0; Real
D. Real part: -1; Imaginary part: 
; Pure imaginary
Mathematics
Evaluate the expression. Do not use a calculator.
A. 604,800 B. 10 C. 720 D. 5040
Mathematics
Complete the equation so the result is an identity. tan x csc x = ___
A. cos x B. 1 C. sec x D. csc x
Mathematics
Each matrix is nonsingular. Find the inverse of the matrix. Be sure to check your answer.
A. 
B. 
C. 
D. 
Mathematics