Question
Download Solution PDFযদি \(\sin A = \frac{1}{{\sqrt 2 }}\) এবং \({\mathop{\rm Cos}\nolimits} B = \frac{{\sqrt 3 }}{2}\) হয়, তাহলে (A + B)º এর মান নির্ণয় করো।
A. 60º
B. 75º
C. 105º
D. 90º
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFপ্রদত্ত:
Sin A = 1/√2
Cos B = √3/2
ব্যবহৃত ধারণা:
গণনা:
ব্যবহৃত ধারণা অনুসারে,
যদি Sin A = 1/√2
⇒ A = 45°
আবার, Cos B = √3/2
⇒ B = 30°
(A + B)° এর যোগফল = 45° + 30° = 75°
∴ (A + B)° এর মান 75°
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