document.write( "Question 1197786: If the tangent of an angle is positive and the secant of the angle is negative, in which quadrant does the angle terminate?
\n" ); document.write( "A. I
\n" ); document.write( "B. II
\n" ); document.write( "C. III
\n" ); document.write( "D. IV
\n" ); document.write( "E. Information given is not sufficient to determine.
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Algebra.Com's Answer #831237 by math_tutor2020(3817)\"\" \"About 
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\n" ); document.write( "sin = sine
\n" ); document.write( "cos = cosine
\n" ); document.write( "sec = secant
\n" ); document.write( "tan = tangent\r
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\n" ); document.write( "\n" ); document.write( "tan = sin/cos
\n" ); document.write( "sec = 1/cos\r
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\n" ); document.write( "\n" ); document.write( "Since tangent is positive, this means sin/cos is positive.
\n" ); document.write( "This further means one of the the following (pick one)
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  • sin > 0 and cos > 0 (quadrant I)
  • sin < 0 and cos < 0 (quadrant III)
We also know secant is negative, which makes 1/cos negative and cosine is also negative.
\n" ); document.write( "Recall that
\n" ); document.write( "x = cos(theta)
\n" ); document.write( "If cosine is negative then we're to the left of the y axis in either quadrant II or quadrant III.
\n" ); document.write( "But we know we're not in quadrant II because of the previous info mentioned. We must be in quadrant III.\r
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\n" ); document.write( "\n" ); document.write( "I recommend reviewing a unit circle.\r
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\n" ); document.write( "\n" ); document.write( "Answer: C. III
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