Question
Download Solution PDFযদি 12tan A = 5 হয়, তাহলে cosec A =?
A. 13/5
B. 12/13
C. 5/13
D. 12/5
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFপ্রদত্ত:
12tan A = 5
ব্যবহৃত ধারণা:
ত্রিকোণমিতির অনুপাতের ধারণা ব্যবহার করে,
tanθ = লম্ব/ভূমি
cosecθ = অতিভুজ/ লম্ব
গণনা:
12tanA = 5
⇒ tanA = 5/12
tanA = BC/AB
BC/AB = 5/12
ΔABC তে,
পিথাগোরাসের উপপাদ্য ব্যবহার করে,
BC2 + AB2 = AC2
⇒ 52 + 122 = AC2
⇒ 25 + 144 = AC2
⇒ AC = √169
⇒ AC = 13
cosecA = AC/BC
⇒ cosecA = 13/5
∴ cosecA এর মান 13/5.
Last updated on Jul 5, 2025
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