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Alex777 [14]
3 years ago
6

2. Why does the sin Ɵ = cos (90 – Ɵ)? Show steps

Mathematics
1 answer:
Troyanec [42]3 years ago
8 0

Answer:

R.H.S:

= cos ( 90 - theta )

= cos (90) cos(theta) + sin(90) sin(theta)

= 0 + sin(theta)                                                       =>[ cos(90) = 0   ,  sin(90) = 1]

= sin(theta)

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A flower bed has the shape of a rectangle 7 yards long and 4 yards wide. What is it’s area in square feet
Alla [95]

Answer: 252 square feet

Step-by-step explanation:

lets remember that 1 yard= 3 feet

7 yards= 7*3=21 feet

4 yards= 4*3=12 feet

we know that area of a rectangle= LxW

21 x 12= 252 square feet

6 0
3 years ago
3) y +24r + 45 = 0<br> What is the greatest common factor
Bond [772]

Answer:

The greatest common factor 24 and 45

The GCF of 24 and 45 is 3.

Step-by-step explanation:

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3 years ago
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What is the value of x +when x=3?​
sesenic [268]

Answer:

when x = 3, x would equal 3 since x can be substituted as 3, aka chancge any xes into 3 if they give you yhat info

Step-by-step explanation:

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3 years ago
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Identify the angle measures of PQRS.
kap26 [50]
The opposite angles of an inscribe quadrilateral are supplementary.

angle P + angle R = 180
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18x + 18 = 180
18x = 162
x = 9

Now we will substitute in the value of x to find angle P and R.

angle P = 6(9)+7 = 61
angle R = 12(9)+11 = 119

Now we will find the value of y.

angle Q + angle S = 180
10y + 7 + 3(3y + 7) = 180
10y + 7 + 9y + 21 = 180
19y + 28 = 180
19y = 152
y = 8

Now substitute in the value of y to find angle Q and S.

angle Q = 10(8)+7 = 87
angle S = 3(3*8+7) = 93

Hope this helps :)
7 0
3 years ago
12m by 7m what is the area
Sergio039 [100]

Answer:

multiply 12*7

Step-by-step explanation:

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