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

Let y = y(x) be the solution of the differential equation sin x dydx + y cos x = 4x, x ∈ (0, π). If y π2...The value of the integral cos x dx is...The equation of the normal to the curve y = x + sin x cos x at x = π/2 is-...The minimum distance of origin from the line of intersection of the planes z = 3 and x + y + z = 4 is -...Exact value of tan 200o (cot 10o − tan 10o) is-...