CBSE[DELHI]_XII_Mathematics_2019_Set_I
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Q1
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Q2
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Q3
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Q4
If a line makes angles 90°, 135° and 45° with the x, y and z axes respectively, find its direction cosines.
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Q5
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Q6
Examine whether the operation * defined on R by a * b = ab + 1 is (i) a binary or not. (ii) if it is a binary operation, is it associative or not ?
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Q7
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Q8
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Q9
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Q10
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