Prove that (1+tanA+cotA)•(sinA-cosB)=sinA•tanB-cotA•cosB
Prince Chaubey , 7 Years ago
Grade 10
Trigonometry> Prove that (1+tanA+cotA)•(sinA-cosB)=sinA...
2 Answers
Saurabh Koranglekar
Last Activity: 5 Years ago
Dear student
Equation must be valid for all angles, Since this is not true at A = 45 and B = 60
We need some defining criteria for values of A and B
Regards
Vikas TU
Last Activity: 5 Years ago
Dear student
Question is not clear
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