If you know the radius and arc length of a sector, do you want to find the distance between two points of the sector arc length, that is, the chord length (the line connecting the two ends)

Suppose the radius is r, the arc length is l, and the chord length is X
X=2Rsin[L/(2R)]

The calculation formula of arc length is chord length of 2.55 m and height of 0.6 M,

The arc length is required to be l = n * r (n is the degree of the center angle of the circle, which is in radian system)
First of all, we should solve the radius r, which can be listed as R = 0.6 + (R ^ 2 - (2.55 / 2) ^ 2) ^ 1 / 2 to get R,
Then, according to the trigonometric function, sin (n / 2) = 2.55/2r, we can find out the arc length

Arc length calculation formula chord length 2.55 m, height 0.6 m, how much is the arc length

Well, 2.55 divided by 2, the square of its result plus the square of 0.6 to find the radius, and then tap the calculator 2ndf cos = 0.6 divided by the previous radius, this degree multiplied by two, and then the arc length formula L = π multiplied by radius multiplied by the degree just calculated multiplied by two divided by 180

Simplification of asin 0 ° + bcos 90 ° + ctan 180 °
Simplification - P & sup2; cos180 ° + Q & sup2; sin90 ° + 2pqcos0 °

sin0°=cos90°=tan180°=0
asin0°+bcos90°+ctan180°=0
cos180°=-1
sin90°=cos0°=1
-p²cos180°+q²sin90°+2pqcos0°
=p²+q²+2pq
=(p+q)²

-Cos180 ° in p-square + sin90 ° in q-square-2pqcos0 ° in Q-square

cos180=-1
sin90=1
cos0=1
So the original formula = P & sup2; - 2pq + Q & sup2; = (P-Q) & sup2;

Asin0 ° + bcos90 ° + ctan0 ° simplification
After class exercises of trigonometric function of any angle

asin0°+bcos90°+ctan0°
=0+0+0=0

What's 45 degrees

tan45°=1
The ratio of the two right sides of an isosceles right triangle

What does "Tan 45" mean? Does it mean "Tan 45"

Yes, the correct one should be 45 ', not comma, two apostrophes

Why is tan3 π / 4 = tan135 degree = - 1

3 π / 4 is the radian system; 135 degrees is the angle system,
The conversion between radian system and angle system is 1 degree = 2 π / 360 radian

How many degrees is Tan 3 to 4

tanA=3/4
∠A=41.4°

If you know the radius and arc length of a sector, do you want to find the distance between two points of the sector arc length, that is, the chord length (the line connecting the two ends)