In Example 4, change the right side to tan x/sec x . Data from Example 4 In
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In Example 4, change the right side to tan x/sec x .
Data from Example 4
In proving the identity
we know that cot x = cos x/ sin x. Because sin x appears on the left, substituting for cot x on the right will eliminate cot x and introduce sin x. This should help us proceed in proving the identity. Thus, starting with the right-hand side, we have
By showing that the right side may be changed exactly to sin x, the expression on the left side, we have proved the identity.
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Related Book For
Basic Technical Mathematics
ISBN: 9780137529896
12th Edition
Authors: Allyn J. Washington, Richard Evans
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