your answer.
Answer:
C) 48.786, 152°
Step-by-step explanation:
To add the vectors u, v and w, we first need to rewrite each vector in component form (where vectors are represented using the unit vectors i and j along the x and y axes).
The (x, y) components of a vector, given its magnitude (r) and direction (θ), are (r cos θ, r sin θ), where θ is measured in the anticlockwise direction from the positive x-axis.
Every vector in two dimensions is made up of horizontal and vertical components, so any vector can be expressed as a sum of i and j unit vectors. Therefore, the i + y form of a vector is:
So, the component form of the given vectors are:
Sum the vectors:
Calculate the magnitude of the resultant vector ||R||:
The direction θ can be found by finding the angle with the horizontal, which is given by:
As the resultant vector is in quadrant II (since the i component is negative and the j component is positive), we need to add 180° to the value of tan⁻¹(y/x). Therefore:
Therefore:
Answer:
The required division problem he must solve is:
Step-by-step explanation:
Consider the provided information.
Martin chose two of the cards below. When he found the quotient of the numbers, his answer was -16/9.
As we know that the quotient of the number is a negative number.
Therefore, the sign of both numbers must be different,
Thus we can concluded he must select as one of the card, so that product is a negative number.
Let the selected card be x.
Hence, the two cards should be and
The required division problem he must solve is: