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The area of a triangle with adjacent sides determined by the vectors a and b is 20. The area of the triangle with adjacent

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The area of a triangle with adjacent sides determined by the vectors a and b is 20. The area of the triangle with adjacent sides determined by the vectors (2a + 3b) and (a – b) is 

(a) 100 

(b) 30 

(c) 24 

(d) 60

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1 Answer

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Best answer

Answer is (a) 100

Explanation:

Given,

(1/2) |a × b|

= 100

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