Find the exact value of the expression if ? = 60°. Do not use a calculator.f(?) = sin ?Find f(?).
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Write the first five terms of the geometric sequence satisfying the given conditions.a = 128, r = - 
A. -128, 64, -32, 16, -8 B. 128, -64, 32, -16, 8 C. -64, 32, -16, 8, -4 D. 128, 64, 32, 16, 8
Mathematics
Find cos(A - B).cos A = 
and sin B = - 
, where 
and 
.
A. 
B. 
C. 
D. - 
Mathematics
Decide whether or not the ordered pair is a solution to the equation.5x + y = 24; (4, 4)
A. Yes B. No
Mathematics
Use the order of operations to simplify the expression.
? 
? 
A. 2
B. 
C. 
D. 1
Mathematics