SOLUTION: Which of the following counterexamples proves that secxcotx=sinx is not a trigonometric identity? Select all that apply
A) 0
B) pi/4
C) 2pi
D) pi/3
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-> SOLUTION: Which of the following counterexamples proves that secxcotx=sinx is not a trigonometric identity? Select all that apply
A) 0
B) pi/4
C) 2pi
D) pi/3
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Question 873095: Which of the following counterexamples proves that secxcotx=sinx is not a trigonometric identity? Select all that apply
A) 0
B) pi/4
C) 2pi
D) pi/3 Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! Which of the following counterexamples proves that secxcotx=sinx is not a trigonometric identity? Select all that apply
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Conjecture:: sec*cot = sin
Substitute to get:: (1/cos)(cos/sin) = sin
True when (1/sin) = sin
True when x = pi/2 or x = (3/2)pi
False when x = 0 or pi/4 or 2pi or pi/3
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Cheers,
Stan H.
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A) 0
B) pi/4
C) 2pi
D) pi/3
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