To find: The solution of the given equation in the interval
The solutions are
Given data:
The equation is
Formula used:
Use the double angle identity for cosine.
Use the double angle identity for sine.
Calculation:
Simplify the given function by separating
Simplify the given equation by using double angle identity for sine and cosine.
Simplify further.
Use the zero factor property. Equate the first factor to zero.
Equate the second factor to zero.
Draw the graph of the given equation.
From the above graph, it is clear that the solutions are
Therefore, the solutions are
Chapter 5 Solutions
PRECALCULUS:GRAPHICAL,...-NASTA ED.
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