In the right triangle ABC, the angle c = 90 degrees, the angle a = 60 degrees, a, B, C are the lengths of three sides and a + B = 1, find a, B, C

In the right triangle ABC, the angle c = 90 degrees, the angle a = 60 degrees, a, B, C are the lengths of three sides and a + B = 1, find a, B, C

∵ in the right triangle ABC, ∠ C = 90 °, a = 60 °
∴∠B=30°
∴b=(1/2)c , a=(√3)b
∵a+b=1
∴(√3)b + b=1
∴b=(√3 - 1)/2
Then a = (3 - √ 3) / 2, C = √ 3 - 1

As shown in the figure, a right angle triangle plate ABC with 12 cm long bevel and 60 ° B is rotated 90 ° counterclockwise around point C to the position of △ a ′ B ′ C ′ and then moved to the right along CB so that point B ′ just falls on the bevel ab. then the distance of the triangle plate moving to the right is______ cm．

It is known that the area of △ ABC is 25, ab = a, and the height on the edge of AB is h, then the functional relationship between H and a is

The functional relationship between H and a is ah / 2 = 25, and ah = 50

The side length of the equilateral triangle ABC is 1, and the point p q R is on BC AC AB, BP: CQ: ar = 1:2:3. Find the functional relationship of △ PQR area s in X (BP = x)
fast
No points will be given after time

S=1/2ab*sin
S = (radical 3) / 4 * [1-x (1-3x) - 2x (1-x) - 3x (1-2x)]
=(radical 3) / 4 * (11x ^ 2-6x + 1)
Don't tell me you don't understand. I'll be hurt

What is the meaning of wl1-bv-3 * 2.5-pc20-cc in building electrical diagram
Building electrical diagram

WL1 circuit code: bv wire, 3 pieces of 2.5m2 wire through PC (polycarbonate pipe), diameter ￠ 20
CC stands for concealed laying in the roof

What does c65nc40 / 2p; BV-2 * 2.5-pvc20-wc / cc mean in the hydropower diagram

C65n is Snyder C65 series miniature circuit breaker, C40 represents rated current 40A, and / 2p is two pole (general single-phase switch);
Bv meter plastic insulated copper core wire, 2 * 2.5 for two 2.5mm2 wires, pvc20 for Φ 20 PVC plastic pipe, WC for concealed laying in the wall, CC for concealed laying in the ceiling
Two 2.5 plastic copper core wires are used to pass through PVC plastic pipes and are laid along the wall and ceiling

Cable model nhvv-4 * 2.5-sc20-we, nh-bv-3x4-sc20- FC.WC How to explain
Sc20, we, FC in the model

Sc20: laying of 20 diameter water gas steel pipe
We laid along the wall
FC is concealed in the ground or floor
WC is concealed in the wall
Ask again if you don't know!

The literal meaning of bv-5x35-pc32-wc in construction drawing
Is it 5 35m2 cables? 4 wires for each? Is PC32 embedded with 5 32m2 pipes? Urgent!

1. "Bv": refers to copper core PVC insulated wire;
2. "5": refers to the number of wires is 5;
3. "35": the cross-sectional area of the wire is 35 square mm;
4. "PC32" refers to PVC wire pipe with outer diameter of 32mm;
5. WC is the abbreviation of wall concealed
Note:
1. It is "five 35 square cables", but each one is a line;
2. Five PVC conduits with 32mm outer diameter should be embedded in the wall, and each conduit should have a 35mm bv wire

What does wlm1 in "bv-4 * 35 + E16 wlm1 sc50fc WC" indicate? Does it indicate leakage protection device?
Is it a leakage protection device? If it is a leakage protection device, is the WLM an equipotential bonding device?

"Bv-4 * 35" is a line representing four 35S
E16 means the protection line is 16 square meters
Wlm1 is the line number itself
The diameter of sc50 steel pipe is 50 square meters
WC is concealed along the wall

Bv-4 * 25 + 1 * 16-pc32-fc-wc is used for laying from the meter box to the distribution box of each household; it is understood that a wire is composed of four pieces of 25 square and one piece of 16 square

BV is a hard core
4 * 25 means that the four wires L1 L2 L3 N use 25 square
+1 * 16 means 16 square meters for PE ground wire