WILL GIVE BRAINLIST IF U CAN ANSWER THESE 2!! QUESTIONS!! PLS
2 answers:
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Answer:
See below
Step-by-step explanation:
3. What are two ways that a vector can be represented?
Considering a vector in some vector space
we have
This is the component form. I don't like that way. It is probably used in high school, but
is preferable because the inner product on is defined to be
You can also write it using linear form such as
4.
For this question, I think you meant
vectors
Once
Considering that the dot product is
and the norm of is
and the norm of is
Thus,
Answer: ∠B = 50°
∠BCD = 40°
<u>Step-by-step explanation:</u>
ACB is a right triangle where ∠A = 40° and ∠C = 90°.
Use the Triangle Sum Theorem for ΔABC to find ∠B:
∠A + ∠B + ∠C = 180°
40° + ∠B + 90° = 180°
∠B + 130° = 180°
∠B = 50°
BCD is a right triangle where ∠B = 50° and ∠D = 90°.
Use the Triangle Sum Theorem for ΔBCD to find ∠C:
∠B + ∠C + ∠D = 180°
50° + ∠C + 90° = 180°
∠C + 140° = 180°
∠C = 40°
