Trigonometry

sin 2θ = 2(sin θ)(cos θ)

cos 2θ = (cos θ)2 - (sin θ)2

cos 2θ = 2(cos θ)2 - 1

cos 2θ = 1 - 2(sin θ)2

tan 2θ = 2(tan θ)/[1 - (tan θ)2]

sin θ/2 = ±√[(1 - (cos θ))/2]

cos θ/2 = ±√[(1 + (cos θ))/2]

tan θ/2 = ±√[(1 - (cos θ))/(1 + (cos θ))] ; cos θ ≠ -1

tan θ/2 = [1 - (cos θ)]/(sin θ)

tan θ/2 = (sin θ)/[1 + (cos θ)]

It is 1.

Short answer, yes.

Long answer, a triangular prism has two triangular faces, its bases, and three rectangular faces, its sides, which connect the two faces. Unfolding the prism into a net reveals a rectangle divided into three rectangular sections (these are the three rectangular faces) and two congruent triangles attached along a common edge to one of these rectangles (these are the two triangular faces).

It is a reflex angle

5 cycles.

to simplify Cosx=Sinx Tanx you should remember your fundamental and pythagorean identities..

Cosx + Sinx Tanx

Cosx + Sinx (Sinx/Cosx) <---------- From Tanx= Sinx/Cosx

Cosx + Sin2x/ Cos x <------------- do the LCD

Cosx (Cosx/Cosx) + Sin2x/Cosx

(Cos2x+Sin2x)/Cosx

1/Cosx <--------- From Sin2x + Cos2x =1

or Secx <-------- answer

Comment if you have questions...:))

sin^5 2x = 1/8 sin2x (cos(8x) - 4 cos(4x)+3)

Neither.

Yes.

In both radians and degrees cos(0) = 1.

An angle of 213 degrees is a reflex angle

Often people involved in industrial production will use polar graphs to program their machines; take, for, example, a pretzel-making machine. They can graph the path the "dough-shaping" machine must follow on a polar graph.

The Formula is Base*Height, or 1/2 Height (altitude of the triangle) * Base (of the Triangle) * height (Height of the prism)

it equals 4

The easiest way of calculating this is to find the probability that all three are boys, as this is the only arrangement that does not fit the criteria. Then work out the answer by taking this away from 1. Probability that all three are boys = 1/2 x 1/2 x 1/2 = 1/8. probability of there being at least one girl is 1 - 1/8 = 7/8 or 87.5%

The values of tan are limitless (that is to say, within [-inf, inf]). However, sin and cos ratios are between -1 and 1. Think about it: sin = opposite/hypotenuse. Since hypotenuse is always larger than or equal to opposite, sin must always be less than 1. Same with cos.

cos(37 deg) = 0.7986

sin(48 deg) = 0.7431 (approx).

Every multiple of 180 degrees, beginning with zero.

sin(21 deg) = 0.3584

The principle of legality; no act should be made criminal or punished without advance warning in the form of legislative act.

Dependent on what side you are given you would use Sin(Θ) = Opposite/Hypotenuse just rearrange the formula to Hypotenuse = Opposite/Sin(Θ).

Or if you are given the adjacent side use Cosine(Θ)=Adjacent/Hypotenuse, then:

Hypotenuse = Adjacent/Cosine(Θ)

press 2nd then click the prb button (or angle) then click 6 :D

The origin of trigonometry in the 18th century was the trigonometric knowledge at the end of the 17th century!