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I'm stuck in this cos and sin conundrum
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SOH CAH TOA:

sinB = 3/5

cosB = 4/5

tanB = 3/4

These are inverses of the above:

cscB = 5/3

secB = 5/4

cotB = 4/3
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Some old hippy
Caught another hippy
Tripping on acid
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This is just straight memorization.

Sine is opp/hyp.
Cosine is adj/hyp.

… and some one will come along with the mnemonic for the rest.
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Sin=opo/hyp ||
Cos=adj/hyp ||
Tan=opo/adj ||
Ctn=adj/opo ||
Sec=hyp/adj ||
Csc=hyp/opo ||
If you see its always the sen/tan/sec followed by its covalue. From the third onward it becomes the inverse
Sin= 1/Csc; Cos=1/Sec: Tan=1/Ctn and the reverse also applies.
The inverse of a fraction is when you  exchange the places of the denominator and numerator
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Third letter of each cosecant secant and cot tells you whether it’s sin cos or tan as a good way of remembering
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This is from the 1960s: Chief Sohcahtoa sha cho cao ('shot your cow') (sec-csc-cot)
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God, has “Some people have curly brown hair, turn permanently black” been that outdated?
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idk i feel like cot b

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