Establish the identity.(1 - cos x)(1 + cos x) = sin2x
What will be an ideal response?
(1 - cos x)(1 + cos x) = 1 - cos2x = sin2x
Mathematics
You might also like to view...
Solve the problem.Let R ={(x, y): 1 ? x < 4, 0 ? y < 9}. Evaluate 
dA, where f is the function 
A. 171 B. 27 C. 9 D. 261
Mathematics
Use the theorem that relates the sum of degrees to the number of edges to determine the number of edges in the graph.A graph with 8 vertices, one of degree 4, three of degree 2, and four of degree 1.
A. 6 edges B. 5 edges C. 14 edges D. 7 edges
Mathematics
Find all the second order partial derivatives of the given function.f(x, y) = x ln (y - x)
A. 
= 
; 
= 
; 
= 
= 
B. 
= 
; 
= - 
; 
= 
= 
C. 
= 
; 
= - 
; 
= 
= - 
D. 
= 
; 
= - 
; 
= 
= 
Mathematics
Use the Pythagorean Theorem to find the missing side of the right triangle.
A. 
B. 21
C. 
D. 221
Mathematics