Trigonometry

sin(3A) = sin(2A + A) = sin(2A)*cos(A) + cos(2A)*sin(A)= sin(A+A)*cos(A) + cos(A+A)*sin(A)

= 2*sin(A)*cos(A)*cos(A) + {cos^2(A) - sin^2(A)}*sin(A)

= 2*sin(A)*cos^2(A) + sin(a)*cos^2(A) - sin^3(A)

= 3*sin(A)*cos^2(A) - sin^3(A)

grouth

The word is derived in part from the Greek word, Iris, meaning "rainbow," which in turn is derived from the goddess, Iris, the personification of the rainbow. She acted as a messenger of the gods. The rainbow unites earth and heaven, linking the gods to humanity. Iris travels the speed of wind, from one end of the world to the other, and into the depths of the sea and the underworld. Iris was said to have golden wings, and her twin sister, Arkhe, to have iridescent ones. During the Titan war, Zeus tore Arkhe's iridescent wings from her, and gave them as a gift to Nereid Thetis at her wedding. Nereid Thetis, then in turn, gave the wings to her son, Achilles, who wore them on his feet. Achilles was then known as Podarkhes, or "wing-footed with Arkhe's wings."

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-305 degrees would be equal to 55 degrees, which can be found in quadrant one in the standard position.

There cannot be a proof since the statement need not be true.

16.2295

Using x instead of theta, cos2x/cosec2x + cos4x = cos2x*sin2x + cos4x

= cos2x*(sin2x + cos2x)

= cos2x*1 = cos2x

cos x = 0; 0 ≤ x ≤ 360°

x = 90° or x = 270° ( 90° + 180°)

Sin(2*pi/6) = sin(pi/3) which, by definition, is 0.5

If you wish, you can calculate

y/1! - y^3/3! + y^5/5! - y^7/7! + ... where y = pi/3.

39o26' (to the nearest minute)

Explanation:

Let the angle = θ

sinθ = 0.6352

To find the angle of sinθ, you must apply sin-1 to sinθ.

sin-1θ = 39o26'5.35"

> square the 1st term

>twice the product of the first and last term

>square the last term

Use a calculator or computer.

You could convert the angle from degrees to radians.

Then, if the angle is x radians,

cos(x) = 1 - x^2/2! + x^4/4! - x^6/6! - ...

But be warned: this is an infinite series.

13sin60 = -3.963 radians

= 11.258 degrees

It is 889,877,761,663,555

no where

horizontal projectile means to project horizontaly from any height h and it forms equation of parabola if we throw any object it goes horizontal and after this it goes down and by the equation s=ut+1/2at*twe can find following things from it

# time ofprojectile

# distance travelled

#effect of gravity

If you have a right angled triangle, then:

sin(angle) = opposite_side/hypotenuse

Otherwise, if the angle (x) is expressed in radians, it can be calculated by the infinite sum:

sine(x) = x - x3/3! + x5/5! - x7/7! + ...

where the rth term (r ≥ 1) is:

x(2r-1)/(2r-1)! (-1)r-1

The secant modulus is the total stress or strain on an object as described by a stress-strain graph. The tangent modulus is the marginal strain.

-1. This is attained for x = 270 degrees ( + k*360 degrees for all integers k)

sine 45 = 0.850903525