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anonymous
 5 years ago
Are the following true or false & why?
cos(175°) = cos(175°)
cos(32°) = sin(58°)
sin(π/3) = 1/sec(π/3)
cos(2π/3) = cos(4π/3)
anonymous
 5 years ago
Are the following true or false & why? cos(175°) = cos(175°) cos(32°) = sin(58°) sin(π/3) = 1/sec(π/3) cos(2π/3) = cos(4π/3)

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0first one is true because cosine is even

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0that is to say \[\cos(x)=\cos(x)\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0second one is true because they add up to 90

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0third one is false because the reciprocal of sine is cosecant, not secant.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0how am i doing so far?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.02pi/3 and 4pi/3 , both have relative angles of pi/3 with the x axis

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0and cos is negative in both 2 and 3rd quadrants

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0what the monkey is cast rule?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0thing its something similar to ASTC

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Please tell me, what is the cast rule? lol!

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0i mean i see that they are the same from drawing a circle. so the answer is true. so i am not casting any doubts

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0it tells you when the trig functions are positive going counterclockwise from the fourth quadrent labelling it C, then A, then S, T. C= cosine, A all, S = sine, T tan

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Sorry for all of the trouble I'm causing! I just really don't understand any of this :( But you guys are really helping out!!!

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0yeh I wouldnt worry about this cast rule thing, its the first time I have ever heard of it, ever

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0it will only confuse you

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0http://www.physics.uoguelph.ca/tutorials/trig/trigonom2.html
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