Vector Algebra

Section: Mathematics

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Question : 20 of 38

Marks: +1, -0

Let ΔPOR be a triangle,Let

→

a

=QR,

→

b

=RP‌ and ‌

→

c

=PQ. If |

→

a

|=12,|

→

b

|=4√3‌ and ‌

→

b

.

→

c

=24, then which of the following is (are) true?

[JEE Adv 2015 P1]

|
→
c
|2
2
−|
→
a
|=12
|
→
c
|2
2
+|
→
a
|=30
|
→
a
×
→
b
+
→
c
×
→
a
|=48√3
→
a
→
b
=−72

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