five friends went out to dinner. each paid 13.75 for the meal including a 7 percent sales tax. what was the total cost of meal b
1 answer:
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Answer:
is used to prove the given equation.
Step-by-step explanation:
We have given an equation:
We will consider right hand side first
tan x can be written as:
So, on substituting tan x in the left hand side of the given equation we get:
Cancel common term from denominator and numerator which is cosx we get
And we have an identity:
Hence, right hand side is equal to .
