Grade 11Trigonometry
If in a triangle ABC B = 60 degrees and sinA.sinC = ∂ . Find all possible values of ∂.
If in a triangle ABC B = 60 degrees and sinA.sinC = ∂ . Find all possible values of ∂.
1 Answer
Ravi
Approved Tutor Answer11 Years agoExpress C=120-A and solvesinA.sinC = ∂ to get the trigonometric solution of the eqn.
One such solution I got was a single trigonometric ratio , namely Cos(2A+60)=1/4-2∂
As -1<=Cos(2A+60)<=1
Using this inequality, you can get the values/ range of∂.
One such solution I got was a single trigonometric ratio , namely Cos(2A+60)=1/4-2∂
As -1<=Cos(2A+60)<=1
Using this inequality, you can get the values/ range of∂.
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