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2 tan^-1 1/3 + tan^-1 1/7 = ____.  (a) tan^-1 4/5 (b) π/2 (c) 1  (d) π/4

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in Trigonometry by (29.7k points)

2 tan-1 1/3 + tan-1 1/7 = ____. 

(a) tan-1 4/5

(b) π/2

(c) 1 

(d) π/4

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1 Answer

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by (34.5k points)

Correct option is: (d) π/4

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