To further justify the Cofunction Theorem, use your calculator to find a value for each pair of trigonometric functions below. In each case, the trigonometric functions are cofunctions of one another, and the angles are complementary angles. Round your answers to four places past the decimal point.
?
sin 23°, cos 67°
?
A. sin 23° = 0.3907, cos 67° = -0.9205
B. sin 23° = -0.3907, cos 67° = 0.9205
C. sin 23° = 0.3977, cos 67° = 0.9135
D. sin 23° = 0.3907, cos 67° = 0.3907
E. sin 23° = 0.3857, cos 67° = 0.9205
Answer: D
You might also like to view...
Assuming that the equations define x and y implicitly as differentiable functions 
find the slope of the curve 
at the given value of t.2tx + 4t2 = 4, 2y - t2 - t = 0, t = 1
A. - 
B. - 6
C. 
D. 
Sketch a graph of the rectangular equation. [Hint: First convert the equation to polar coordinates.]
 figure 1.png)
Use the information given to draw a bar graph. Clearly label the bars. The following table shows the number of male infants born in a certain city on New Year's Day in various years. Make a horizontal bar graph to illustrate the data.
What will be an ideal response?
Solve the equation and express the solution in exact form.log9 (x - 3) + log9 (x - 3) = 1
A. 
B. 
C. 
D. 