Verify the identity.(cos ? + sin ?)2 + (cos ? - sin ?)2 = 2(cos2? + sin2?)
What will be an ideal response?
(cos ? + sin ?)2 + (cos ? - sin ?)2 
Mathematics
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Determine if the given regular figures form a vertex figure.Pentagon, two triangles, 20-gon
A. Yes B. No
Mathematics
Use Cramer's rule to solve the linear system.
A. x = 
, y = 
B. x = - 
, y = 
C. x = 
, y = - 
D. x = 
, y = - 
Mathematics
Add or subtract as indicated.
+ 
A. x - 3
B. x + 5
C. 
D. x - 5
Mathematics
Factor completely. If the polynomial cannot be factored, say it is prime.20z2 + 7z - 6
A. (4z - 3)(5z + 2) B. (4z + 3)(5z - 2) C. (20z + 3)(z - 2) D. prime
Mathematics