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skelet666 [1.2K]
3 years ago
13

PLS HELP What is the cos and sin for an angle of rotation 30, 45, 60 and 90 degrees? I WILL MARK AS BRAINLIEST PLZ HELP

Mathematics
1 answer:
Semmy [17]3 years ago
4 0

Answer:

Step-by-step explanation:

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What is the value of x^0​
hoa [83]

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Its equal to 1

Step-by-step explanation:

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Order these numbers in order 0.5, 1 1/4, 0.25, 3/8
vodomira [7]

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0.5,0.25,3/8,1 1/4

Step-by-step explanation:

3 0
3 years ago
I need help on these please, also explain how you got the answer please ♡
SIZIF [17.4K]
27. N > -1
29. T < 2
31. K= -12
33. 30= 4m + 2
Answer: m = 7
7 0
3 years ago
5.
Verdich [7]

Answer:

Step-by-step explanation:

let's say is 42 and 53 if u know your numbers of course you know  the answer but the number that is bigger like 53 that the bigger number but if negative that is the smaller number

4 0
3 years ago
Find the area of this regular polygon.<br> Round to the nearest tenth.<br> 8.65 mm<br> [? ]mm2
nadezda [96]

Answer:

Actually it's not polygon. it's a nonagon. With r=8.65mm″, the law of cosines gives us side a:

a=√{b²+c²−2bc×cos40°}

a=√{149.645−149.645cos40°}

Area Nonagon = (9/4)a²cos40°

=9/4[149.645−149.645cos40°]cot20°

=336.70125[1−cos(40°)]cot(20°)

Applying an identity for the cos(40°) does not get us very far…

= 336.70125[1−(cos2(20°)−1)]cot(20°)

= 336.70125[2−cos2(20°)]cot(20°)

= 336.70125[2−(1−sin2(20°))]cot(20°)

= 336.70125[1+sin2(20°)]cos(20°)sin(20°)

= 336.70125[cot(20°)+sin(20°)cos(20°)]mm²

3 0
3 years ago
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