Mathematics : त्रिकोणमिति

If tanθ= (x sinϕ) / (1−xcosϕ) and, tan ϕ = (y sin θ)/ (1−y cos θ) then x/y = , If tanθ= (x sinϕ) / (1−xcosϕ) and, tan ϕ = (y sin θ)/ (1−y cos θ) then x/y =

If tanθ= (x sinϕ) / (1−xcosϕ) and, tan ϕ = (y sin θ)/ (1−y cos θ) then x/y =

If tanθ= (x sinϕ) / (1−xcosϕ) and, tan ϕ = (y sin θ)/ (1−y cos θ) then x/y =
A. sinθ / (1−cosϕ)
(sinθ / (1−cosÏ•))

B. sinθ / (1−cosθ)

C. sinθ/sinϕ
(sinθ/sinÏ•)

D. sinϕ / sinθ
(sinÏ• / sinθ)



Correct Answer :

C. sinθ/sinϕ



Explanation

We have, tanθ = (x sinϕ)/ (1−xcosϕ)


⇒ (1−xcos ϕ) / (x sin ϕ) = 1/ tanθ ⇒ (1/ xsin ϕ) −cotϕ=cotθ


⇒ 1/ xsin ϕ= =cot θ+cot ϕ


and tan ϕ = y sinθ / (1−y cosθ) ⇒ (1−y cosθ)/ y sinθ = 1/ tan ϕ


⇒ (1/y sin θ) – cot θ = cotϕ⇒ (1/ y sin θ) =cot ϕ+cot θ


⇒ (1/y sin θ) = (1/ x sin ϕ) ⇒ x/y = sin θ/ sin ϕ

Latest Current Affairs 2026 Online Exam Quiz for One day Exam Online Typing Test CCC Online Test , CCC MCQ Python Coding Tutorials Best Computer Training Institute in Prayagraj (Allahabad) O Level NIELIT Study material and Quiz Website development Company in Allahabad