Use the appropriate addition formula to find the exact value of the expression.tan 
A. -2 - 
B. 2 + 
C. 
D. 
Answer: B
Mathematics
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Quadrilateral ABCD is inscribed in a circle with ?A opposite ?C. If ?D = 125° , find ?B.
(a) 55° (b) 125° (c) 250° (d) 110°
Mathematics
Multiply the polynomials and simplify by combining like terms.(x2 + x - 2)(x2 + x - 7)
A. x4 + x3 + 10x2 + 9x + 14 B. x4 + 2x3 + 9x2 + 5x + 14 C. x4 + 2x3 - 8x2 - 9x + 14 D. x4 + x3 - 9x2 - 9x + 14
Mathematics
Use the change-of-base rule to find the logarithm to four decimal places.log36 51.03
A. 0.9113 B. 1.0974 C. 1.7078 D. 1.4175
Mathematics
Use the substitution-of-variable technique to solve the system analytically.
+ 
= - 
- 
= - 
A. {(-5, -1)} B. {(5, 1)} C. {(-1, -5)} D. {(9, 8)}
Mathematics