if `tan ^-1 (( sqrt (1+x^2)-1)/x) = pi/45` then:
1,204 views · Published 13 October 2018 · 4:23 · Indexed 1 October 2026
Channel: Doubtnut · 2018 · Education
To ask Unlimited Maths doubts download Doubtnut from - https://goo.gl/9WZjCW if `tan ^-1 (( sqrt (1+x^2)-1)/x) = pi/45` then:
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