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Elenna [48]
3 years ago
13

Ratios for sin a and cos a equation​

Mathematics
1 answer:
Kruka [31]3 years ago
5 0

Answer:

sin(A) = 3/5. , cos(A) = 4/5

Step-by-step explanation:

sine = opposite/hypotenuse cosine = adjacent/hypotenuse

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Which system of equations intersect at point A in this graph y = 10x - 1
scZoUnD [109]
Its the first one i think
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3 years ago
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A circle has a circumference of 450cm
anzhelika [568]

The circumference of the circle is actually the perimeter ( length of the boundary ) of the circle . And a part of the circle which lies between two distinct points on the circumference of the circle is called an arc . If the length of the arc is less than half the circumference , it is called minor arc and remaining portion which is more than half of the circle ( but natural ) is called major arc .

When these two points , which make the arc are joined separately to the centre of circle , these arms make angle at the centre . This is called the angle subtended by the arc at the centre of the circle .

There is a beautiful logical relation exists between arc length and the angle , the arc makes ( subtends ) at the centre of the circle . This relation is as under , the wholle circle subtends an angle of 360 degree at the centre . Half the circumference subtendr 360 / 2 ie 180 degree at the centre . The logical relation becomes Arc Length = Circumference × angle in degrees it ( the arc ) subtends at the centre of the circle / 360 degree . So the answer is very simple :- The Arc Length = 36 × 90 / 360 or 9 units ( may be centimetres or metres or inches , feet , yards , etc ) . Which is definitely length of the minor arc . The length of the major arc ( remaining portion of the circumstance ) is 36 - 9 = 27 units . Hence the required answer of the sum is 9 units .

3 0
3 years ago
Read 2 more answers
Kay sees a jacket in New York costing $170
ANEK [815]

Answer:

its cheaper in new York by $1.60

Step-by-step explanation:

132 x 1.30 = 171.60

if the jacket is $170 in new York it is cheaper

4 0
3 years ago
At Best Buy they have a stereo system that sells for $2500 and is on sale for 9% and sales tax is 5%. What is the final cost?
Vedmedyk [2.9K]

Answer:

Final cost = $2388.75

Step-by-step explanation:

Cost of stereo system = $2500

Sale = 9%

Cost of sale = 9% of 2500

Cost of sale = \frac{9}{100}*2500 = 0.09*2500

Cost of sale = $225

Price after sale = 2500 - 225 = $2275

Sales tax = 5% of 2275

Sales tax = 0.05 * 2275 = $ 113.75

Final cost = 2275 + 113.75 = $2388.75

7 0
3 years ago
Consultar sobre las propiedades de la potenciacion y la radicacion y para cada uno dar 2 ejemplos
Nataly_w [17]

Answer:

Potencia de una potencia

La potencia de una potencia de base a es igual a la potencia de base a elevada a la multiplicación de ambos exponentes -

Potencia de base 10

En las potencias con base 10, el resultado será la unidad seguida de tantos ceros como indica la cifra del exponente

radiacion

En matemáticas, la radicación es el proceso de hallar raíces de orden n de un número a.1​.  

De modo que se verifica que  

x n = a {\displaystyle x^{n}=a}  

, donde n es llamado índice u orden, a es llamado radicando, y x es una raíz enésima.2​3​  

La raíz de orden dos de  

a {\displaystyle a}  

, se llama raíz cuadrada de  

a {\displaystyle a}  

y se escribe como  

a {\displaystyle {\sqrt {a}}}  

o también  

a 2 . {\displaystyle {\sqrt[{2}]{a}}.}  

La raíz de orden tres de  

a {\displaystyle a}  

, se llama raíz cúbica de  

a {\displaystyle a}  

y se escribe como  

a 3 . {\displaystyle {\sqrt[{3}]{a}}.}  

Las raíces de órdenes superiores se nombran usando números ordinales, por ejemplo raíz cuarta o raíz séptima.

La radicación es la operación inversa a la potenciación. s:

Step-by-step explanation:

5 0
3 years ago
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