tanϴ =5/12 হলে, secϴ= কত?
Solution
Correct Answer: Option D
আমরা জানি,
1+tan2Φ=sec2Φ
⇒ 1+(5/12)2=sec2Φ
⇒ 1 + 25/144 = sec2Φ
⇒ 169/144 = sec2Φ
∴ secΦ=13/12
1+tan2Φ=sec2Φ
⇒ 1+(5/12)2=sec2Φ
⇒ 1 + 25/144 = sec2Φ
⇒ 169/144 = sec2Φ
∴ secΦ=13/12
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