Verify the identity.sin x(sin x + sin 5x) = cos 2x (cos 2x - cos 4x)
What will be an ideal response?
sin x(sin x + sin 5x) = sin x(2 sin 3x cos 2x) = 2 cos 2x sin x sin 3x
= cos 2x (cos 2x - cos 4x)
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Find the volume under the surface z = f(x,y) and above the rectangle with the given boundaries.z = 6x2y; R = {(x, y): 0 ? x ? 4, 0 ? y ? 3}
A. 1256 B. 676 C. 2256 D. 576
Find the function value to four decimal places.Find sec ? if tan ? = 2.1260 and sin ? < 0.
A. -2.3494 B. -1.8761 C. 7.8740 D. 9.7714
The figure shows angle ? in standard position with its terminal side intersecting the unit circle. Evaluate the six trigonometric functions of ?.
What will be an ideal response?
Find a polynomial of least degree with only real coefficients and having the given zeros.6 + 5i and 6 - 5i
A. f(x) = x2 + 61 B. f(x) = x2 - 12x + 11 C. f(x) = x2 + 12x + 61 D. f(x) = x2 - 12x + 61