Algebra> A line AB in three dimensional space make...

A line AB in three dimensional space makes angles 45° and 120° with the positive x – axis and the positive y – axis respectively. If AB makes an acute angle ? with the positive z – axis, then ? equals -

saket kumar , 11 Years ago

Grade 12

2 Answers

SHAIK AASIF AHAMED

Hello student,

Thanks and regards

Shaik Aasif

askIITians faculty

Last Activity: 11 Years ago

SHAIK AASIF AHAMED

Hello student,

Directional cosines of line segment AB is cos 45,cos 120,cos $\Theta$

so cos²45+cos²120+cos² $\Theta$ =1

we get cos $\Theta$ =1/2

so $\Theta$ =60 degrees.

Thanks and regards

Shaik Aasif

askIITians faculty

Last Activity: 11 Years ago

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Algebra> A line AB in three dimensional space make...

A line AB in three dimensional space makes angles 45° and 120° with the positive x – axis and the positive y – axis respectively. If AB makes an acute angle ? with the positive z – axis, then ? equals -

saket kumar , 11 Years ago

SHAIK AASIF AHAMED

SHAIK AASIF AHAMED

LIVE ONLINE CLASSES

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