Use the reference angle to find the exact value of the expression. Do not use a calculator.sin 405°
A. - 
B. 
C. 
D. - 
Answer: C
Mathematics
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List the elements in the set .Let U = {q, r, s, t, u, v, w, x, y, z} A = {q, s, u, w, y} B = {q, s, y, z} C = {v, w, x, y, z}. C - A
A. {v, x, z} B. {q, s, u, v, x, z} C. {q, s, u} D. {w, y}
Mathematics
Write the Babylonian numeral as a Hindu-Arabic numeral.
?
A. 120 B. 140 C. 85 D. 60
Mathematics
Use the given information to find the exact value of the trigonometric expression.sin ? = 
; The terminal side of ? lies in Quadrant I.
Find cos 2?.
A. 
B. - 
C. 
D. - 
Mathematics
Multiply or divide as indicated.
? 
A. 
B. 
C. 
D. 
Mathematics