Given the vectors u=(5,8) and w =(-4a,5a+5), where a is a constant. If it is known that u' +w° =(-15,38), the measure of the angle e formed between u' and w corresponds to: 5 a) 0 = cos™ /3600 105 b) 0 = cos /231400 140 c) 0 = cos /115700 1845 d) 0 = cos 1594346

Elementary Linear Algebra (MindTap Course List)
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Chapter5: Inner Product Spaces
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Given the vectors u=(5,8) and w' =(-4a,5a+5), where a is a constant.
If it is known that u +w =(-15,38), the measure of the angle 0 formed between u' and w
corresponds to:
5
a) 0 = cos
/3600
105
b) 0 = cos
V231400
140
c) 0 = cos
V115700
1845
d) 0 = cos
1594346
Transcribed Image Text:Given the vectors u=(5,8) and w' =(-4a,5a+5), where a is a constant. If it is known that u +w =(-15,38), the measure of the angle 0 formed between u' and w corresponds to: 5 a) 0 = cos /3600 105 b) 0 = cos V231400 140 c) 0 = cos V115700 1845 d) 0 = cos 1594346
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