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What is the value of k and why?

What Is The Value Of K And Why class=

Sagot :

9514 1404 393

Answer:

  (c)  π/2

Step-by-step explanation:

We know the sine of an angle is the cosine of its complement, and vice versa. The complement of angle x is (π/2-x), so ...

  sin(π/2 -x) = cos(x)

This is shown by the attached graph.

View image sqdancefan