Answer:
Supongo que tenemos dos ángulos A y B
"la mitad de A mas la tercera parte de B es igual a 15°" (también supongo que son grados)
A/2 + B/3 = 15°
A/2 = 15° - (B/3)
A = 30° - 2*(B/3)
Ahora queremos calcular:
2*sin(3*A)/cos(2*B)
pero podemos reemplazar A por lo que tenemos arriba:
2*sin(3*(30° - 2*(B/3)))/cos(2*B)
2*sin(90° - 2*B)/cos(2*B)
y como sabemos,
Sin( 90° - x) = Sin(90°)*cos(-x) + cos(90°)*sin(-x) = cos(-x) = cos(x)
entonces:
2*sin(90° - 2*B)/cos(2*B) = 2*cos(2*B)/cos(2*B) = 2*1 = 2.
You did the equation a little wrong. It is A^2 + B^2 = 10^2
Answer:
9 cm
Step-by-step explanation:
In a parallelogram, opposite sides are equal.
RS = PQ
4x + 1 = 2x + 5
Now, to find the value of x,
Step1. Subtract 1 from both sides
4x = 2x + 5 - 1
4x = 2x + 4
Step 2: Subtract 2x from both sides
4x - 2x = 4
2x = 4
Step 3: Divide both sides by 2
x = 4/2
x = 2
PQ = 2x + 5
= 2*2 + 5
= 4 + 5
PQ = 9 cm
So using the conversion of 1 metric ton to kg, we see that there are 1000 kg in 1 ton. Then we can divide 40 by 1000 to find the decimal:
Then to convert this decimal to a percentage, we must multiply by 100%:
So now we know that 40 kg is 4% of 1 ton.
Answer:
assim claro
Step-by-step explanation:
