You need to know the mnemonic AllSInTanCos for the functions which are positive in quadrants ! through IV.
Then look up the value in a trig function table. No magic about it!
Khoa N.
asked • 05/13/20Solve for 0≤θ<360 : cosθ=−0.4739
How do i do this question?
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Khoa N.
Thank you, I will go over more in-depth in this topic05/13/20