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jcarangui1
 one year ago
Can somebody please help me with these kind of problem:
http://imgur.com/bMZZXvr
jcarangui1
 one year ago
Can somebody please help me with these kind of problem: http://imgur.com/bMZZXvr

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welshfella
 one year ago
Best ResponseYou've already chosen the best response.3Its useful to know the following 2 triangles dw:1439680661226:dw

welshfella
 one year ago
Best ResponseYou've already chosen the best response.3and in radians 30 degrees = pi/6 radians 60 = pi/3 90 = pi/2 45 = pi/4

welshfella
 one year ago
Best ResponseYou've already chosen the best response.3and also the signs of the ratios in the 4 quadrants in unit circle dw:1439680925707:dw

welshfella
 one year ago
Best ResponseYou've already chosen the best response.3A = all positive in 1st quadrant S = only sine positive T = only tan positive C = only cosine positive so for example the cosine is negative in 2nd quadrant

welshfella
 one year ago
Best ResponseYou've already chosen the best response.3so lets try 5pi/6: draw a diagram dw:1439681119509:dw

welshfella
 one year ago
Best ResponseYou've already chosen the best response.3cos 5pi/6 =  cos pi/6 =  sqrt3/2

triciaal
 one year ago
Best ResponseYou've already chosen the best response.0@welshfella you might also want to "review" the trig relationships
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