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lilsis76
 2 years ago
how can i determine which of the two trigonometric values is larger in a, b, and c ?
a) cos pi/12 or sin pi/12
b) cos 18 degrees or cos 54 degrees
c) cos 320 degrees or sin 290 degrees
lilsis76
 2 years ago
how can i determine which of the two trigonometric values is larger in a, b, and c ? a) cos pi/12 or sin pi/12 b) cos 18 degrees or cos 54 degrees c) cos 320 degrees or sin 290 degrees

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ChmE
 2 years ago
Best ResponseYou've already chosen the best response.1for cos. The higher the degree up to 90 the lower the value. from 90 to 180 the value increases. for sin it is the opposite. **UNIT CIRCLE**

lilsis76
 2 years ago
Best ResponseYou've already chosen the best response.0okay. im checking it out

lilsis76
 2 years ago
Best ResponseYou've already chosen the best response.0okay, well for a) it says cos pi/12 and sin pi/12, how will i know where the pi/12 is??

lilsis76
 2 years ago
Best ResponseYou've already chosen the best response.0dw:1355083788207:dw @ChmE

ChmE
 2 years ago
Best ResponseYou've already chosen the best response.1cos is the x value and sin in the y value

ChmE
 2 years ago
Best ResponseYou've already chosen the best response.1you can see the the y value increases to 90 then goes back down. x value it opposite

lilsis76
 2 years ago
Best ResponseYou've already chosen the best response.0oh...okay i didnt see that. so then the cos would be larger because its sqrt3/2 ?

ChmE
 2 years ago
Best ResponseYou've already chosen the best response.1dw:1355084128293:dwx value is greater than the y value right. more right than up. so cos pi/12 is bigger

lilsis76
 2 years ago
Best ResponseYou've already chosen the best response.0cool, i didnt understand this what so ever last time. let me try the next one okay. and ill give u my answer. could u tell me if its right? so cos 18, would be larger than cos 54 right?

ChmE
 2 years ago
Best ResponseYou've already chosen the best response.1Careful because it is kind of a trick question

ChmE
 2 years ago
Best ResponseYou've already chosen the best response.1yes. because sin is negative in this quadrant. It is a big red flag

ChmE
 2 years ago
Best ResponseYou've already chosen the best response.1sin will always be less in quadrant 4

lilsis76
 2 years ago
Best ResponseYou've already chosen the best response.0okay, so the sin would mean its smaller so that means the cos will be smaller too

lilsis76
 2 years ago
Best ResponseYou've already chosen the best response.0okay thank you so much haha. im trying to correct my last test givin back to me and i got alot wrong cuz i didnt understand lots of things

ChmE
 2 years ago
Best ResponseYou've already chosen the best response.1I hope this helped. Just think of cos as the x value on the circle and sin as the y value on the circle. Always helped me
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