Use the figure to find the exact value of the trigonometric function.
?
cos 2?
?
?
a = 1, b = 2
?
A. ?
B. 
C. ?
D. ?
E. ?
Answer: B
Mathematics
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Find the exact value under the given conditions.sin ? = 
, 
< ? < ?; cos ? = 
, 0 < ? < 
Find sin (? - ?).
A. - 
B. 
C. 
D. 
Mathematics
Multiply.(-8)(-8)(-8)
A. 512 B. -512 C. -522 D. -502
Mathematics
Use the properties of determinants to find the value of the second determinant, given the value of the first.
= 28
= ?
A. 56 B. 28 C. -28 D. -56
Mathematics
Provide an appropriate response.A student is trying to solve the equation (x + 3)(x - 2) = 9. The student has set x + 3 = 9 and x - 2 = 9 and found that two solutions x = 6, x = 11. The student checks his or her results by plugging in his or her solutions into the original equation and finds that they do not work. How would you advise him or her?
What will be an ideal response?
Mathematics