Cos(A+B) sin (C+D) = cos (A-B) sin (C-D). To prove CotA Cot B cot C = cot D
Pradip Pandit , 5 Years ago
Grade 11
Trigonometry> Cos(A+B) sin (C+D) = cos (A-B) sin (C-D)....
1 Answers
Saurabh Koranglekar
Last Activity: 5 Years ago
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