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3 years ago

Evaluate the following expression. cos870° - sin780º =

Mathematics

1 answer:

Yuri [45]3 years ago

8 0

Answer:

-sqrt(3)

Step-by-step explanation:

Solve each individually

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17 out 22 what percentage is correct

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The answer is <span>77.2727272727273% hopw this help

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3 years ago

Solve by square rooting : 3(X+2)^2:8

dolphi86 [110]

The value of x is √8/3 - 2

Step by step explanation:

The given equation is

3(x+2)^2=8

To find x,

(x+2)²= 8/3

By taking square root on both sides

x+2= √8/3

x=√8/3 -2

x= -0.37

Thus the square root for the given value is -0.37

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4 years ago

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Lesechka [4]

40 is considered an outlier since it it much further out on the data scale
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3 years ago

What is 1+1? lol i know it’s 2

bogdanovich [222]

Lol I'll just comment to get 5 points

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3 years ago

With a line 7 cm long. Use a set square and a ruler and draw perpendicular lines at both ends

Setler79 [48]

Answer:

See Explanation

Step-by-step explanation:

According to the Question,

Steps of construction:

Step I - Draw a line segment AB = 7 cm with the help ruler.

Step II - with vertex A, by using compass take more than half of AB and draw arcs, one on each side of AB.

Step III - with vertex B, by using a compass with the same length, cut the previous arcs at X and Y respectively.

Step IV - with help of the ruler join the points X and Y Thus XY is the perpendicular bisector of line AB.

(For Diagram please find in attachment)

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3 years ago