Use the fundamental identities to find the value of the trigonometric function.Find cos ?, given that tan ? = -  and ? is in quadrant II.

A. - 
B.
C. - 
D.


Answer: A

Mathematics

You might also like to view...

Solve the problem.Calculate the area of the parallelogram with v =  and w =  as the adjacent sides.

A. 72
B. 36
C. 36
D. 6

Mathematics

Write the number in decimal notation without the use of exponents.9.32 x 10-4

A. 0.000932 B. 0.00932 C. -932,000 D. 0.0000932

Mathematics

Graph the function using its vertex, axis of symmetry, and intercepts.f(x) = x2 - 4x - 5

A. vertex (2, 9)
intercepts (5, 0), (- 1, 0), (0, 5)

B. vertex (-2, 9)
intercepts (-5, 0), (1, 0), (0, 5)

C. vertex (-2, -9)
intercepts (-5, 0), (1, 0), (0, -5)

D. vertex (2, -9)
intercepts (5, 0), (- 1, 0), (0, -5)

Mathematics

Describe the transformations that produce the graph of g from the graph of f. ; g(x) = -4x3 + 6

A. Stretch vertically by a factor of 4. Reflect it across the x-axis. Shift it 6 units upward. B. Stretch vertically by a factor of 6. Reflect it across the x-axis. Shift it 4 units upward. C. Stretch vertically by a factor of 4. Reflect it across the x-axis. Shift it 6 units downward. D. Stretch vertically by a factor of 4. Reflect it across the y-axis. Shift it 6 units upward.

Mathematics