hit the 2nd button on top the hit sin it should inverse on most calculators
Sine, in mathematics, is a trigonometric function of an angle. The sine of an angle is defined in the context of a right triangle: for the specified angle, it is the ratio of the length of the side that is opposite that angle (that is not the hypotenuse) to the length of the longest side of the triangle (i.e., the hypotenuse).
Trigonometric functions are commonly defined as ratios of two sides of a right triangle containing the angle, and can equivalently be defined as the lengths of various line segments from a unit circle. More modern definitions express them as infinite series or as solutions of certain differential equations, allowing their extension to arbitrary positive and negative values and even to complex numbers.
In mathematics, the inverse trigonometric functions(occasionally called cyclometric functions) are the inverse functions of the trigonometric functions (with suitably restricted domains). Specifically, they are the inverses of thesine, cosine, tangent, cotangent, secant, and cosecantfunctions.
You have to construct a best-fit straight line to the data first. Have a look at https://www.youtube.com › watch for example.
Let v be the boats speed in still water.
Downstream speed = v + 8 km/hr
Time to get to 56 km: t = 56/(v + 8)
Upstream speed = v - 8 km/hr
Time to get to 24 km: t = 24/(v - 8)
The times are the same so: 56/(v + 8) = 24/(v - 8)
56(v - 8) = 24(v + 8)
32v = 80*8
v = 80*8/32
v = 80/4
v = 20 km/ hr
Thanks so much ElectricPavlov!
Let the number of cuts=C
2 x 2^C=318 x 12 =3,816 divide both sides by 2
2^C=1,908 take the logs of both sides
C=Log(1,908)/Log(2)
C=10.899 or ~ 11 cuts.
# 8 Using Pythagorean theorem (to find the resultant distance from the starting point)
a^2 + b^2 = c^2
250^2 + 575^2 = c^2 c= 626.99 meter 626.99 meters/ (45 + 55)seconds = 6.27 m/s average from her starting point(as a RESULTANT)
Her ACTUAL average speed is (250 + 575)/(45+55) = 8.25 m/s
You say " at a certain point"? I think it should say "after 2 hours".........etc.
Boat "a" average speed per hour=56/2=28 - 8(current's speed)=20 Km/h.
Boat "b" average speed per hour=24/2=12 + 8 ,,,,,,,,,,,,,,,,,,,,,,,,,=20 Km/h
4 a R = 16 + 12 + (60 x 40)/(60+40) = 52 ohms
b V = I R = .25 x 52 = 13 volts
c Voltage drop across R1 = .25 (16) = 4
R4 = .25 (12) = 3 13 - 4 - 3 = 6V across R2 (AND R3)
d Current through R2 = V/R = 6/60 = .1 A Power = I^2 R or VA = .6 watts
Okay here is the work
I solved question #8 and got 6.3 m/s.
Is that right? Ill post my work later
11. cuts (318 ft = 3816 inches)
1 cut = 4 inches
2 cut = 8 inches
3 cut = 16 inches
4 cut = 32 inches
5 cut = 64
6 = 128
7 = 256
8= 512
9 = 1024
10 = 2048
11= 4096
The base rectangle is 11 + 11 + 3 + 3 = 28 cm
the additional two squares on top add 4 sides of 2cm = 8 cm 28 + 8 = 36 cm
(I don't think you should add the 2cm on TOP of the squares as they are counted in the LOWER rectangle perimeter).
159 cuts.
55.36 is 4% of 346*4
Dependent variables are the things that you measure that change in response to what you have done(Independent variables)
Normally, dependent variables are the things that you measure.
0.0035 =
3.5 x 10-3
V=a3
i think i may be wrong but try that
the answer is 35 cm
As Alan said : arrange in numerical order
2 3 4 4 4 5 7 7 18 the number in the middle is the MEDIAN----
'4' has four numbers below it and four above it.
whoever answers thank you
Hey Melody..... kinda just figured that one in my head (I do not think you can find two other values for a and b that add to 17 with a hyp of 13 ....try) ....here is the method:
a+b =17 so b = 17-a (1)
Pythagorean theorem: a^2 + b^2 = c^2 = 13^2= 169 Substitute (1) into this
a^2 + (17-a)^2 = 169
a^2 +a^2 - 34a + 289 = 169
2 a^2 -34a + 120 = 0
a^2 -17a +60 = 0 Use Quadratic formula to get (17+- sqrt49)/2 results in 12 and 5
12-5-13 triangle area = 1/2 a x b = 1/2 x 12 x 5 = 30 sq units