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What is the sign of the trigonometric function, given the quadrant the terminal ray of an angle lies in? Select all correct statements.

•The cosine function is negative in quadrant ​ II ​.

•The cosecant function is positive in quadrant ​ IV .

•The sine function is positive in quadrant ​ I ​.

•The secant function is positive in quadrant ​ III ​.

•The cotangent function is negative in quadrant ​ II ​.

 Feb 12, 2020
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The cosine function is negative in quadrant ​ II ​     

cos =  x/r....in this quadrant, x is negative  [r is always positive ]

 

The sine function is positive in quadrant ​ I ​

sin = y/r.......x, y and r are all positive in the first quadrant

 

The cotangent function is negative in quadrant ​ II

cot  = x/y......x is negative and y is positive in quadrant 2

 

 

cool cool cool

 Feb 12, 2020

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