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Mathematics 18 Online
OpenStudy (anonymous):

which quadrant contains both sin2theta and cos 2theta when cos theta=-1/2

OpenStudy (kc_kennylau):

|dw:1385993764262:dw|

OpenStudy (anonymous):

what does this mean

OpenStudy (anonymous):

any notes on this chapter?

OpenStudy (kc_kennylau):

C means that \(\mbox C\)osine is positive in that quadrant, S for Sine, T for Tangent, A for All

OpenStudy (kc_kennylau):

The mnemonic for this is \(\mbox{CAST}\)

OpenStudy (anonymous):

so how do i solve this?

OpenStudy (anonymous):

very weak in this chapter... :(

OpenStudy (kc_kennylau):

@skullpatrol sorry can you please help him I do not quite understand the question :) @vishnu5995 I'm so sorry that I cannot help you

OpenStudy (anonymous):

its alright kenny... Thank u

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