What is the formula for the path of approach?

1.	What is the formula for the path of approach?
A.	(R<sub>a</sub><sup>2</sup> ‚Äö√Ñ√∂‚àö√ë‚àö¬® R<sup>2</sup>cos<sup>2</sup> ‚âà√¨‚àö√∫)<sup>0.5</sup> ‚Äö√Ñ√∂‚àö√ë‚àö¬® Rsin‚âà√¨‚àö√∫
B.	(R<sub>a</sub><sup>2</sup> + R<sup>2</sup>cos<sup>2</sup> ‚âà√¨‚àö√∫)<sup>0.5</sup> + Rcos‚âà√¨‚àö√∫
C.	(R<sub>a</sub><sup>2</sup> + R<sup>2</sup>cos<sup>2</sup> ‚âà√¨‚àö√∫)<sup>0.5</sup> + Rsin‚âà√¨‚àö√∫
D.	(R<sub>a</sub><sup>2</sup> + R<sup>2</sup>cos<sup>2</sup> ‚âà√¨‚àö√∫)<sup>0.5</sup> ‚Äö√Ñ√∂‚àö√ë‚àö¬® Rcos‚âà√¨‚àö√∫
Answer» B. (R<sub>a</sub><sup>2</sup> + R<sup>2</sup>cos<sup>2</sup> ‚âà√¨‚àö√∫)<sup>0.5</sup> + Rcos‚âà√¨‚àö√∫

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What is the formula for the path of approach?

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