यदि `|vec(A)xxvec(B)|=AB` हो तो A व B के बीच कोण है -

If the angle between two radii of a circle be 130^@ , then the angle between the tangents at the end of these radii is: यदि किसी वृत्त की दो त्रिज्या के बीच का कोण 130^@ है, तो इन त्रिज्या के अंत में स्पर्शरेखाओं के बीच का कोण है

If vec(A)xxvec(B)=vec(B)xxvec(A) , then the angle between vec(A) and vec(B) is-

If vec(A)xxvec(B)=vec(B)xxvec(A) , then the angle between vec(A) and vec(B) is-

If vec(A)xxvec(B)=vec(B)xxvec(A) , then the angle between vec(A) and vec(B) is-

If vec(A)xxvec(B)=vec(B)xxvec(A) , then the angle between vec(A) and vec(B) is-

Assertion: vec(A)xxvec(B) is perpendicualr to both vec(A)-vec(B) as well as vec(A)-vec(B) Reason: vec(A)xxvec(B) as well as vec(A)-vec(B) lie in the plane containing vec(A) and vec(B) , but vec(A)xxvec(B) lies perpendicular to the plane containing vec(A) and vec(B) .

([If (vec a xxvec b) * (vec b xxvec c) xx (vec c xxvec a) = (vec a * vec b xxvec c) ^ (k) find k.

If vec a xxvec b = vec b xxvec c = vec c xxvec a then vec a + vec b + vec c =