3 years ago

Which is not enough given information needed to solve a right triangle?

Mathematics

1 answer:

jolli1 [7]3 years ago

6 0

The answer would be if you only knew one angle and that would be 90 degrees.

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Let a=(?2,1,2, b=(?1,2,4, and p=(k,k,k. the vector from a to b is perpendicular to the vector from a to p when k =

prohojiy [21]

Vector a = (2, 1, 2)
Vector b = (1, 2, 4)
Vector p = (k, k, k)

Vector a to vector b = vector b - vector a = (1, 2, 4) - (2, 1, 2) = (1 - 2, 2 - 1, 4 - 2) = (-1, 1, 2)
Vector a to vector p = vector p - vector a = (k, k, k) - (2, 1, 2) = (k - 2, k - 1, k - 2)

Vector a to b is perpendicular to vector a to p if the dot product of vector a to vector b and vector a to vector p is equal to zero.
i.e. (-1, 1, 2) . (k - 2, k - 1, k - 2) = 0
-1(k - 2) + (k - 1) + 2(k - 2) = 0
-k + 2 + k - 1 + 2k - 4 = 0
2k -3 = 0
2k = 3
k = 3/2

6 0

3 years ago

The difference between 2.4 and a number is 1.61, as shown below. What number should go in the box to complete the subtraction pr

Lady bird [3.3K]

Answer:

x. = 0.79

Step-by-step explanation:

Let the unknown number be x

$2.4 - x = 1.61$