Suppose an investment of $2000 doubles in value every 8 years. How much is the investment worth after 24 years? After 32 years?
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We start with the more complicated side which is the left side, and show that, on using some trigonometric identities, we will get the term on the right side .
Using Quotient identity for tangent function, we will get
Taking out sine function from the numerator
Cancelling the common term of numerator and denominator
