Establish the identity.cos(4u) = 2 cos2(2u) - 1
What will be an ideal response?
cos(4u) = cos[2(2u)] = 2 cos2(2u) - 1
Mathematics
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Graph the function.y = 
- 2
A. 
B. 
C. 
D. 
Mathematics
Add the polynomials.(2x6 - 4x5 + 4) + (8x6 - 5x5 - 9)
A. 10x6 - 9x5 - 5 B. 12x6 - 3x5 - 13 C. -4x11 D. 10 - 9x6 - 5x5
Mathematics
Solve the triangle, if possible. Approximate values to the nearest tenth when appropriate.? = 44.1°, c = 4.6, ? = 90°
A. a = 3.3, ? = 45.9°, b = 3.2 B. a = 3.2, ? = 45.9°, b = 3.3 C. a = 3.3, ? = 45.9°, b = 2.5 D. a = 2.5, ? = 45.9°, b = 3.9
Mathematics
Multiply.- 
A. 1
B. - 
C. - 1
D. 
Mathematics