write the principle value of tan-1(root 3) - cot-1(-root 3)

Asked by  | 19th May, 2013, 12:46: PM

Expert Answer:

tan-1(root 3) - cot-1(-root 3) 
 = pi/3 - (- pi/6)
= pi/3 +  pi/6
= pi/2

Answered by  | 20th May, 2013, 09:29: AM

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