Use Identities to find the exact value.cos 255°

A.
B.  - 
C.  - 
D.


Answer: D

Mathematics

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IT = 445 mA, I1 = 300 mA, and I2 = 15 mA. Find I4.



a. 115 mA
b. 145 mA
c. 285 mA
d. 130 mA
e. 165 mA

Mathematics

Rationalize the denominator.

A. 7 - 1
B. 7 + 7
C.
D. 7 - 7

Mathematics

Graph the function.f(x) = 

A.

B.

C.

D.

Mathematics

Simplify the expression.8-2 

A. - 
B. -64
C.
D.

Mathematics