The radius of the cirele in which the sphere -r-5 is cut by the plane r- -i-j-k-3-3 is-

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Visualizing Conics from Right Circular Cone

The radius of...

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The radius of the cirele in which the sphere \vert r\vert=5 is cut by the plane r. (i+j+k)=3\surd3 is=

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| \to r | = 5

\to r \cdot (^i +^j +^k) = 3 \sqrt{3},

| \to r | = 5

\to r \cdot (^i +^j +^k) = 3 \sqrt{3}

| ¯ ¯ ¯ r | = 5

¯ ¯ ¯ r

(ˆ i + ˆ j + ˆ k) = 3 \sqrt{3}

\to r . (2^i + 2^j -^k) = 5

| \to r | = 9

¯ r .^i = 0 = ¯ r .^j, ¯ r .^k

¯ r . (^i .^j .^k) = a

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