What's in this room

What's in this room

What is there in the room?

What's in your room

What do you have in your bedroom?

2(sin^6 α +cos^6α)-3(sin^4a+cos^4α)

sin^6α +cos^6α=(sin^2α+cos^2α)(sin^4α-sin^2αcos^2α+cos^4α)=sin^4α-sin^2αcos^2α+cos^4α2(sin^6 α +cos^6α)-3(sin^4α+cos^4α)=2sin^4α-2sin^2αcos^2α+2cos^4α-3sin^4α-3cos^4α=-sin^4α-co...

The usage of the English Intermediate word for
The calculation of torque for ideal and practical currents is developed?

For has many uses:
It means "as, as"
I like some bread and milk for breakfast
What will we have for supper?
2. Express reason or reason, which means "because, because"
Thank you for helping me with my English
Thank you for your last letter
Thank you for teaching us so well
3. The object or receiver of an action, which means "to..." "Yes For example:
Let me pick it up for you
Watching TV too much is bad for your health
It means time and distance, which means "counting and reaching"
I usually do the running for an hour in the morning
We will stay there for two days
Where to go, where to go, where to go, where to get, where to buy, etc
Let's go for a walk
I come here for my schoolbag
I paid twenty yuan for the dictionary
It means "for, suitable for..." I'm not sure
It's time for school
Here is a letter for you
7. To express "support or approval"
Are you for this plan or against it?
8. Used in some fixed collocations
Who are you waiting for?
For example, Mr Green is a kind teacher
and
In the calculation of torque for ideal and practical currents is developed, for is used to connect torque and ideal

In the right triangle ABC, ∠ BAC = 90 °, ab = AC, De is a straight line passing through a, BD ⊥ De, CE ⊥ de. it is proved that △ ace is all equal to △ abd

Certification:
∵BD⊥DE
∴∠BAD+∠ABD＝90
∵∠BAC＝90
∴∠BAD+∠CAD＝90
∴∠ABD＝∠CAD
∵CE⊥DE,AB＝AC
The ace is equal to abd

The French don't speak English

the frenchmen doesn't speak english.

Given the triangle ABC, P is a certain point on the edge of BC. Make a straight line through p to divide the area of triangle ABC equally
1. If the point P is exactly the midpoint of BC, make a straight line AP
2. If P is not the midpoint of BC, take the midpoint D of BC, connect AP, cross point d to make De, parallel AP, cross AC to e, and make a straight line PE. The straight line PE is the straight line
I don't understand the second question: why is this OK,

Maybe you can't turn this bend for a while. Listen to me, you will understand. As shown in the figure below: connect AD and PE, the intersection point is F. from the first question, we can see that s triangle ADC = 1 / 2 * s triangle ABC = S1 + S2 + S3, and because De is parallel to AP, so in trapezoidal Pade, S3 = S4

We like tomatoes and potatoes

Do you like tomatoes or potatoes?
Do you like tomatoes and potatoes?

If the hypotenuse of a right triangle is 2 larger than that of a right triangle and the other right triangle is 6, then the hypotenuse is 2
If the hypotenuse of a right triangle is larger than that of the right triangle and the other right triangle is 6, then the hypotenuse is 2
If AB = 10, AC: BC = 3: then the area of the right triangle is
There are two trees in the campus, 12 meters apart. One tree is 13 meters high, and the other is 8 meters high. A bird flies from one tree to the top of another tree, and the bird at least flies
The length of the isosceles triangle is 10, the length of the base is 12, and the height of the optional ground edge is 10

Let the hypotenuse be x (X-2) ^ 2 + 36 = x ^ 2x = 10, the hypotenuse be 102 AC: BC = 3:4, let AC = 3K BC = 4K (3K) ^ 2 + (4K) ^ 2 = 100k = 2, the area of the right triangle is 1 / 2 * AC * BC = 243 (13-8) ^ 2 + 12 ^ 2 = 169 = 13 ^ 2, the bird flies at least 13 meters, 4 10 ^ 2 - (12 / 2) ^ 2 = 64 = 8 ^ 2, the height on the bottom edge is 8

Find 30 pairs of antonyms of English Adjectives

Big – small
Easy – difficult
Old – NEW
Black white
Easy – hard
Old young
Fast slow
Early late
Right – Wong right - wrong
Good bad
Hot cold
Right – left
Same – different
Open – closed
Full - empty full - empty
Cheap - dear
Warm cool
Full - hungry
Beautiful - ugly
Happy sad
Light dark
Clever – stupid
Quiet – noisy
Light – heavy
Clean – dirty
Fat thin
Short – long
Careful – careless
Far near
Short – tall