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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
 one year ago
 one year 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
 one year ago
 one year ago

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ChmEBest ResponseYou've already chosen the best response.1
for 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**
 one year ago

lilsis76Best ResponseYou've already chosen the best response.0
okay. im checking it out
 one year ago

lilsis76Best ResponseYou've already chosen the best response.0
dw:1355083613247:dw
 one year ago

lilsis76Best ResponseYou've already chosen the best response.0
okay, well for a) it says cos pi/12 and sin pi/12, how will i know where the pi/12 is??
 one year ago

lilsis76Best ResponseYou've already chosen the best response.0
dw:1355083788207:dw @ChmE
 one year ago

ChmEBest ResponseYou've already chosen the best response.1
cos is the x value and sin in the y value
 one year ago

ChmEBest ResponseYou've already chosen the best response.1
you can see the the y value increases to 90 then goes back down. x value it opposite
 one year ago

lilsis76Best ResponseYou've already chosen the best response.0
oh...okay i didnt see that. so then the cos would be larger because its sqrt3/2 ?
 one year ago

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

lilsis76Best ResponseYou've already chosen the best response.0
cool, 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?
 one year ago

ChmEBest ResponseYou've already chosen the best response.1
Careful because it is kind of a trick question
 one year ago

ChmEBest ResponseYou've already chosen the best response.1
yes. because sin is negative in this quadrant. It is a big red flag
 one year ago

ChmEBest ResponseYou've already chosen the best response.1
sin will always be less in quadrant 4
 one year ago

lilsis76Best ResponseYou've already chosen the best response.0
okay, so the sin would mean its smaller so that means the cos will be smaller too
 one year ago

lilsis76Best ResponseYou've already chosen the best response.0
okay 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
 one year ago

ChmEBest ResponseYou've already chosen the best response.1
I 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
 one year ago
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