Question

42. Let x

${x}^{2} + y^{2} = 1$
;
${u}^{2} + {v}^{2} = 1$
and
xu + yy=0, then
1.
${x}^{2} + {u}^{2} = 1$

2.
${y}^{2} + {v}^{2} = 1$
3. xy + uv = 0
Which of the above is/are true ?
(a) 3 only
(b) 1 and 2 only
(c) 1, 2 and 3
(d) 2 and 3 only​

Answer 1

Answer:

B

Step-by-step explanation:

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