Find the exact value by using a half-angle identity.sin 75°
A. - 
B. 
C. 
D. - 
Answer: B
Mathematics
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Perform the indicated operation.-5 + (-10)
A. 5 B. -15 C. 15 D. -5
Mathematics
Solve the equation.x + 2 = 20
A. x = 18 B. x = 22 C. x = 8 D. x = 40
Mathematics
Simplify the expression.165/4
A. 128 B. 256 C. 32 D. 512
Mathematics
Complete.223.2 mm = 
dm
A. 223.2 B. 22,320 C. 2232 D. 2.232
Mathematics