Bárbara construye una cabaña de madera. La cabaña mide 42 metros de ancho. Bárbara obtuvo varias vigas
de madera de 27 metros de largo para el techo de la
cabaña.
Naturalmente, quiere poner las vigas a un ángulo tal que
cada par de vigas opuestas se encuentren exactamente
en el medio.
¿Cuál es el ángulo de elevación de las vigas del techo
en grados?
Redondea tu respuesta final a la décima más cercana.

answer: option a.

step-by-step explanation:

you know that the quadrilateral opqr ( a four sided figure) is inscribed in circle. this means that all its vertices are on the circle.

then, by definition, the opposite angles of the quadrilateral are supplementary, this means that the sum of their measures is 180 degrees.

you can observe in the figure that the angles ∠opq   and the angle ∠orq   are opposite, therefore:

then, can be used to d to calculate the measure of ∠opq

step-by-step explanation: given equation a = h(b 1+b 2)

also we are given values of a, h and b 1 as :

a = 16, h = 4, and b 1 = 3.

in order to solve it for b 2, we need to plug the given values of   a, h and b 1 .

therefore, plugging values of   a, h and b 1   in given equation, we get

16 = 4( 3 + b 2)

first dividing both sides by 4, we get

4 = 3 + b 2

subtracting 3 from both sides, we get

4 -3 = 3 -3 + b 2

1 = b 2.

-3 degrees

step-by-step explanation: