Mathaddict100's answer to Ong Jia Zhi's Secondary 4 A Maths Singapore question.
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This is another way you can change Tan(1/2)A to SinA/(CosA+1)..After that,you just need to substitute the values of SinA and CosA to the new trigo function formed.Try memorising this formula for the half angle of tan so as it will be easy for you..Hope this helps. :)
Date Posted:
5 years ago
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