Find a ·
b. |a| = 3, |b| = 14 , the angle between a and b is 45° $7.94 incorrect: your answer is incorrect.

Question

03-02-2018
Mathematics

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Find a ·
b. |a| = 3, |b| = 14 , the angle between a and b is 45° $7.94 incorrect: your answer is incorrect.

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mathmate mathmate · Answer 1 · 2018-02-03T23:01:20+01:00

mathmate mathmate

03-02-2018

a · b = |a| |b| cos(theta)
=|a| * 14 * cos(45)

a · b |a| =3
=>
|a| * 14 * cos(45) * |a| =3
|a| ² =3/(14cos(45))
|a| = sqrt(3/(14cos(45)))
=0.63868 (approx.)

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Find a · b. |a| = 3, |b| = 14 , the angle between a and b is 45° $7.94 incorrect: your answer is incorrect.

Respuesta :

Otras preguntas

Find a ·
b. |a| = 3, |b| = 14 , the angle between a and b is 45° $7.94 incorrect: your answer is incorrect.