Trigonometric EquationHard

Question

In a triangle ABC, ∠B = and ∠C = LetDdivides BC internally in the ration 1 : 3, then is equal to

Options

A.
B.
C.
D.

Solution

       
ᐃABD, applying sine rule, we get
     
⇒     AD x sin α       .......(i)
And in ᐃACD, applying sine rule, we get
     
⇒     AD = x sin β       .......(ii)
From Eqs. (i) and (ii),
       
⇒    

Create a free account to view solution

View Solution Free
Topic: Trigonometric Equation·Practice all Trigonometric Equation questions

More Trigonometric Equation Questions

If = 3 then the general solution of θ is-...is equal to -...The volume of the tetrahedron formed by the coterminous edges Then the volume of the parallelopiped formed by the coterm...If tan θ + tan 4θ + tan 7θ = tan θ tan 4θ tan 7θ, then θ =...The number of values of in the interval [-π, π] satisfying the equation cos θ + sin 2θ = 0 is-...