TopScpre QR Exam1 Question #8

[ILikeTeeth]

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Hello Again,

If theta = 287 degree, which of the following is not true?

sin of 287 < 0
tan of 287 < 0
cos of 287 < 0
sec of 287 > 0
cot of 287 < 0

Thank you,

 

[boogaking]

if you draw out the sin curve.... where the positive hump is btw 0 and 180 degrees and the second hump is btw 180 and 360 .....sin 287 is found in the negative region... i think thats it... ????

 

[ILikeTeeth]

if you draw out the sin curve.... where the positive hump is btw 0 and 180 degrees and the second hump is btw 180 and 360 .....sin 287 is found in the negative region... i think thats it... ????

Hello,

so you are saying that the correct answer is sin 287 < 0?

Thats what I said but thats not the correct answer. Thanks

 

[bryan45876]

The cos(287) is not less than 0.
The cos(287) = .292, which is a positivie number.

 

[boogaking]

no i meant that was one of the true ones... sorry i didnt fully read the original question... i believe the incorrect one is the cos ... cuz cos 287 is clearly positive....