Question

tan^-1 (1) + cot ^-1 (1/2)

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Answer 1

Answer:

π-cot-1(12)+π-cot- 1(13) 2π-[cot-1(12)+cot-1(13)] =π+tan-1(12)+ tan-1(13) =π+tan-1[1/2+1/31-1/6]=π+π4=5π4.

Step-by-step explanation:

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Answer 2

Answer:

-1. 31422467.......................

if there is cos then the answer is this....