Answer:
β = arccos((a^2 + c^2 - b^2)/(2·a·c))
β = arccos((3^2 + 7^2 - 5^2)/(2·3·7)) = 38.21°
Answer: The answer is AB = CD.
Step-by-step explanation: We are given a quadrilateral ABCD with AB ║ CD.
We know that a quadrilateral is said to be a parallelogram if any one of the following conditions is satisfied:
(i) If both pairs of opposite angles of a quadrilateral are equal, then it is a parallelogram.
(ii) If one pair of opposite sides of a quadrilateral is both equal and parallel, then it is a parallelogram.
(iii) If the diagonals of a quadrilateral bisect each other, then it is a parallelogram.
We are given that AB is parallel to CD, so by the condition (ii), if we get the additional information that AB = CD, then ABCD will be a parallelogram.
Thus, the answer is AB = CD.
Answer:
180
Step-by-step explanation:
An application of the nonlinear system of differential equations in mathematical biology/ecology: to model the predator-prey relationship of a simple eco-system. ... They form a simple food-chain where the predator species hunts the prey species, while the prey grazes vegetation.
Answer:
Your answer is ::::::::.. 15.25
The answer would be 2.59374246 hope this helps
