cot(a+15)-tan(a-15)=4cos2a/1+2sin2a prove that ....
reyansh , 7 Years ago
Grade 11
Trigonometry> cot(a+15)-tan(a-15)=4cos2a/1+2sin2a prove...
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Saurabh Koranglekar
Last Activity: 5 Years ago
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