Establish the identity.tan2x = sec2x - sin2x - cos2x
What will be an ideal response?
tan2 x = sec2 x - 1 = sec2 x - (sin2 x + cos2 x) = sec2 x - sin2 x - cos2 x.
Mathematics
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Round off a measurement of 5m to three significant digits.
A. 5.m B. 5.00m C. 500m D. undetermined
Mathematics
Solve the equation.6(x + 4) = 5x + 2(x + 3)
A. 22 B. 10 C. 28 D. 18
Mathematics
Find the x- and y-intercepts. If no x-intercepts exist, state so.f(x) = 2x2 - 14x - 16
A. (8, 0), (1, 0), (0, 16) B. (-8, 0), (-1, 0), (0, 16) C. (-8, 0), (1, 0), (0, -16) D. (8, 0), (-1, 0), (0, -16)
Mathematics
The double line graph below shows the number of Acme Superstores vs. the number of General Superstores. 
Approximately how many more stores did General have than Acme in 2011?
A. approximately 200 B. approximately 500 C. approximately 250 D. approximately 750
Mathematics