# Prove that the two straight lines represented by (x^2 + y^2).sin^2 (alpha)=[x cos(theta) - y sin (theta)]^2 include an angle 2(alpha).?

• Prove that the two straight lines represented by (x^2 + y^2).sin^2 (alpha)=[x cos(theta) - y sin (theta)]^2 include an angle 2(alpha).?

... (x^2 + y^2).sin^2 (alpha)=[x cos(theta) - y sin ... Prove that the two straight lines represented by (x^2 + y^2) ... y sin (theta)]^2 include an angle ...
Positive: 68 %
... and the determination of the gradient of a straight line); ... x}(x^2\sin y+y^2\cos x) = 2x\sin ... r^{n-2}\cos(n\theta) + \left[\alpha n{n+1}-n-n ...
Positive: 65 %

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Indeed, then sin(x) = ; 4sin(x) = = 2; sin(2x) ... when I try to find the inverse of sin theta to find the angle, ... cot = cos/sin = sqrt(1 - sin^2)/sin ...
Positive: 68 %
cos(x/2 ) = √ [ ( 1 + cos ... section on euler's formula and include the proof for a trig ... is to write sin x instead of sin (x) and sin 2x ...
Positive: 63 %
... let's choose a path made up of two straight line segments, one from (x 0,y 0) ... (x,y)=x 2 sin(y 2) and Q(x,y)=x 3 y 2 cos ... (x,y,z). Theta is the ...