1.

\operatorname { tan } ^ { - 1 } \frac { 1 } { 3 } + \operatorname { tan } ^ { - 1 } \frac { 1 } { 5 } + \operatorname { tan } ^ { - 1 } \frac { 1 } { 7 } + \operatorname { tan } ^ { - 1 } \frac { 1 } { 8 } = \frac { \pi } { 4 }

Answer»

1/3 aur 1/5 wale ko ek sath Nahi let sakte h

you can try doing that also

but waise Karne per answer Nahi aa Raha hai

Aapne first ke dono ko Nahi lekar bich Ka kyun liya ? iska koi rule h kya?

answer will come from both. Check this

yes .. mistake Kar rahe the.. thanks



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