If x=a(cos t+cos 2t) & y=b(sin t+sin 2t) then find an equation without t.
Avijit Das , 7 Years ago
Grade 11
Trigonometry> If x=a(cos t+cos 2t) & y=b(sin t+sin 2t) ...
1 AnswersArun
Last Activity: 7 Years ago
Add b²x² and a²y²
Hence
b² x²+a² y² = a² b² + a²b² + 2a²b² cos t = 2a² b² (cos t +1)
Now
If x/y is find out
Then
x/y = a(2cost -1) ( cost +1) / b(sint ) (2 cos t +1)
Here you can find out cos t +1
And then you can find the relation between x and y
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