Question
Download Solution PDFजर sin(x + y) = cos {3(x + y)} असेल, तर cot {2(x + y)} चे मूल्य _______ आहे.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFदिलेले आहे:
जर sin(x + y) = cos {3(x + y)}
वापरलेले सूत्र:
sin A = cos B ⟹ A + B = π/2
गणना:
समजा A = x + y आणि B = 3(x + y)
⟹ A + B = π/2
⟹ (x + y) + 3(x + y) = π/2
⟹ 4(x + y) = π/2
⟹ x + y = π/8
आता, आपल्याला cot {2(x + y)} चे मूल्य शोधायची आहे
⟹ 2(x + y) = 2 × π/8
⟹ 2(x + y) = π/4
cot (π/4) = 1
म्हणूनच, योग्य उत्तर पर्याय (2) आहे.
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