If secx +tanx = k, then show tha sinx = (k^2 - 1) / (k^2 + 1)
Answers
Answered by
0
Here, sec x = (k^2 +1)/2k.
So, cos x = 2k/(k^2 +1).
Thus, from sin x = Sqrt(1 - (cos x)^2). we get the required answer.
Either you can derive it from triangle also. whichever is suitable to you.
So, cos x = 2k/(k^2 +1).
Thus, from sin x = Sqrt(1 - (cos x)^2). we get the required answer.
Either you can derive it from triangle also. whichever is suitable to you.
Similar questions