A = 45o হলে 1- tan2A / 1 + tan2A = কত?
Solution
Correct Answer: Option C
দেয়া আছে,
A = 45°
দেওয়া আছে,
(1 - tan2A)/(1 + tan2A) = (1 - tan245°)/(1 + tan245°)
= {1 - 12}/{1 + 12}
= 0/2
= 0
A = 45°
দেওয়া আছে,
(1 - tan2A)/(1 + tan2A) = (1 - tan245°)/(1 + tan245°)
= {1 - 12}/{1 + 12}
= 0/2
= 0
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