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ryzh [129]
3 years ago
12

: Cho tam giác ABC vuông tại C, trong đó AC = 0,9m, BC = 1,2m. Tính các tỉ số lượng giác của góc B, từ đó suy ra các tỉ số lượng

giác của góc A.
Mathematics
1 answer:
Xelga [282]3 years ago
5 0

Answer:

Step-by-step explanation:

Vì tam giác ABC vuông tại C nên ta áp dụng định lí pitago=> AB²=AC²+BC²=0.9²+1.5²=3.06=>AB= (3 căn bậc hai của 34)/10

sin B=AC/AB=(3 căn bậc hai của 34)/34

cos B=BC/AB

tan B= AC/BC

cot B= BC/AC

Tương tự suy ra tỉ số lượng giác góc A

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Answer:

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The display gives the result of performing a quadratic regression on a data set where the inputs are speeds in miles per hour an
alina1380 [7]
Y = a x² + b x + c
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3 years ago
A 10-foot ladder is leaning against a wall. The base of the ladder is 2 feet from the base of the building. How far up the build
Svetlanka [38]
We can see on this graph that the triangle has legs of x and 6 with a hypotenuse of 10 and we can use Pythagoreans theorem to find the unknown side.
Pythagoreans theorem: a^2+b^2=c^2, where a and b are the legs of the triangle and c, is the hypotenuse 

x^2+6^2=10^2 Plugin a=x, b=6, and c=10. Now let us solve for x 

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5 0
3 years ago
What is the rate of change of the equation y=0.86x+3.302
Alchen [17]

The rate of change of the given equation is: 0.86

Step-by-step explanation:

Rate of change or slope is the steepness of a linear function or line.

When an equation is given in the form of slope-intercept form, the co-efficient of x is the slope or rate of change of the equation.

Given equation is:

y=0.86x+3.302

We can see that the co-efficient of x is 0.86

Hence,

The rate of change of the given equation is: 0.86

Keywords: Slope, rate of change

Learn more about slope at:

  • brainly.com/question/729447
  • brainly.com/question/7287774

#LearnwithBrainly

3 0
3 years ago
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