Wish me luck on this test someone help plz
2 answers:
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Answer:
Step-by-step explanation:
The sine of an angle is defined as the ratio between the opposite side and the hypotenuse of a given right-angled triangle;
sin x = ( opposite / hypotenuse)
The opposite side to the angle x is thus 1 unit while the hypotenuse is 3 units. We need to determine the adjacent side to the angle x. We use the Pythagoras theorem since we are dealing with right-angled triangle;
The adjacent side would be;
The cosine of an angle is given as;
cos x = (adjacent side / hypotenuse)
Therefore, the cos x would be;
Answer:
Step-by-step explanation:
(A) The radius of the circle is=1.8m
Then diameter will be: 2r=
Circumference of circle= =
Area of the circle=
(B) The area of the rectangular backboard of basketball court = 18900
Width=180cm
Area of rectangle= l{\times}b[/tex]
18900=l{\times}180[/tex]
Perimeter of the seating space=2(l+b)
=
=
Perimeter of the basketball court=2(l+b)
=
=
Now, total perimeter= perimeter of the basketball court+perimeter of the seating space.
Total perimeter=
Area of the seating space=
=
(C) The shape consists of one square and 4 triangles, therefore area of square=
Area of 4 triangles=
=
Area of the shape= Area of the square+ area of the 4 triangles
=
(D) Perimeter of rectangle with length=40 m (After converting cm to m) and breadth= 10 m is given by:
Perimeter of rectangle with length 68 m and breadth=33 m is given by:
Perimeter of the semicircle=
Total perimeter=
Area of rectangle with length=40 m (After converting cm to m) and breadth= 10 m is given by:
Area of rectangle with length 68 m and breadth=33 m is given by:
Area of the semi circle=
Total area=