In the triangle ABC, D and F are the triangles of AB and E and G are the triangles of AC. then the ratio of the area of ade to that of dfge and fbcg is?

1：3：5
And ad = 1 / 2AF = > s △ ade / s △ AFG = 1 / 4 = > s △ ade / s △ AFG
Area of ADE: area of dfge = 1:3
The same △ ade ∽ ABC and ad = 1 / 3AB = > s △ ade / s △ ABC = 1 / 9 = > s ∽ ade / s ∽ ABC
Area of ADE: area of DBCE = 1:9
Let the area of △ ade = 1, then the area of dfge = 3 and the area of fbcg = 5
=>Area of ADE: area of dfge: area of fbcg = 1:3:5

I'd like some () and (). A. porridge, vegetable B. broccoli, tomatoes

I'd like some () and (). A. porridge, vegetable B. broccoli, tomatoes choose B reason: porridge and broccoli are uncountable nouns, vegetable and tomato are countable nouns, plural is, vegetables and tomatoes hope to help you

If the length of the hypotenuse of a right triangle is 2 larger than that of the right triangle, and the length of the other side is 6, then the length of the hypotenuse (?)

Let the right angle side be x, then the hypotenuse is (x + 2)
From Pythagorean theorem, we get x ^ 2 + 6 ^ 2 = (x + 2) ^ 2
x^2+36=x^2+4x+4
36=4x+4
x=8
(x+2)=10
A: the length of hypotenuse is 10

The antonym of day

night

Application of sine and cosine theorem
In the triangle ABC, let a / C = (√ 3) - 1, (tanb) / (Tanc) = (2a-c) / C, find ABC

Because (tanb) / (Tanc) = (2a-c) / C
Cut the string to get:
(sinB/sinC)(cosC/cosB)=(2a-c)/c
By using the sine cosine theorem, we get the following results
(b/c)[(a²+b²-c²)(2ac)/(a²+c²-b²)(2ab)]=(2a-c)/c
The results are as follows
a²+c²-b²=2bc(*)
So CoSb = (A & # 178; + C & # 178; - B & # 178;) / (2Ac) = 1 / 2
So B = π / 3
From (*), a / C = (√ 3) - 1 is brought in to get:
b²=3(2-√3)c²
So sinc / SINB = C / b
So sinc = SINB * (C / b)
=(√3/2)√[1/(3(2-√3))]
=√{1/[4(2-√3)}
=√[(2+√3)/4]
=√[(4+2√3)/(4*2)]
=√[(1+√3)²/(4*2)]
=(√2/2)*(1+√3)/2
=(√2/2)(sinπ/6+cosπ/6)
=sin(π/6+π/4)
=sin(5π/12)
Tanc > 0
So 0

Is "be" followed by "ing"?
Be verb {am, is, are}

If you are a junior high school student or a primary school student, all the tenses you have learned are like this;
Of course, be + verb past participle means passive

What is the law of negation?

The law of negation of negation reveals the advance and tortuous agreement of the development of things, which is reflected in: every inch of negation is a qualitative change, pushing food to a new stage; every cycle is developed, there is no key point that can not be denied, and the tortuousness is reflected in the recovery, which is in accordance with the law of negation of negation and requires us to treat things, Opposing the metaphysical negation of affirming everything and negating everything

Change the following nouns into plural
shirt watch egg tomato
potato jacket plane fish
deer hero radio piano
family child mouse bus
foot tooth Chinese German
American knife wife Englishman

shirts watches eggs tomatoes
potatoes jackets planes fishes
deers heroes radioes pianoes
families children mice buses
feet teeth Chinese Germans
Americans knives wives Englishmen

In △ ABC, a, B and C are the opposite sides of angles a, B and C respectively, and bcosa acosb = c-a. (I) find the size of angle B; (II) if the area of △ ABC is 334 and a + C = 5, find B

(I) from the cosine theorem, we get cosa = B2 + C2 − a22bc, CoSb = A2 + C2 − b22ac, and substitute the above formula into bcosa acosb = C-A, we get: B2 = A2 + C2 AC, we get CoSb = 12, because B is the inner angle of the triangle, so B = π 3; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp

Yesterday afternoon Chen Ling's moter ___ in the ,She sports shoes
Please fill in English
Yesterday the girl _ in the .She a doll.
It's two questions. If you can, please copy two sentences and fill them in. Thank you.

Yesterday afternoon Chen Ling's moter was in theshoe store ,She bought sports shoes
Yesterday the girl was in the toy store.She bought a doll.

In the triangle ABC, D and F are the triangles of AB and E and G are the triangles of AC. then the ratio of the area of ade to that of dfge and fbcg is?