Trigonometry

You can type sin(53 degrees) into Google and get your answer that way.

Also, I happen to know that 53 degrees is very close to one of the angles of a 3,4,5 right triangle, so sin(53 degrees) is very close to 4/5.

the answer is 180 degrees; since cos 180⁰ = -1, then cos-1 -1 = 180⁰

mathematically

cos-1-1

here calculator is required

and you'll get answer 180 degrees.....

It depends on what identity you are talking about whether its multiplicative inverse to additive inverse i mean you have to be more specific

Let 'theta' = A [as 'A' is easier to type]

sec A - 1/(sec A)

= 1/(cos A) - cos A

= (1 - cos^2 A)/(cos A)

= (sin^2 A)/(cos A)

= (tan A)*(sin A)

Then you can swap back the 'A' with theta

sin(x) = tan(x) when x equal 0

You can use the inverse of sin when you want to solve an equation where x is the angle you're trying to find.

Say sin(x)=32/50

Since you can't plug "x" into your calculator, use the arc sin (represented on your calculator by sin -1) on both sides to get rid of the sin. This is how it would plug into your calculator:

sin-1 (32/50)

Whatever the answer is would be what "x" equals.

x*pi / 180

-420*3.14 / 180 = -7.33

Approx 2.6131

Leaving aside the fuzziness caused by atmospheric diffraction the curve (called the Terminator!) is really a straight line running North-South. North and South in this context are "poles" perpendicular to the plane of the earth's orbit around the sun and should not be confused with the geographic or magnetic N and S.

Unfortunately for map makers, the earth is approximately spherical and so they need to use some form of projection to represent the earth on a 2-dimensional (flat) surface. This process distorts the geography of the earth. For example, the most commonly used projection, the Mercator projection, greatly exaggerates the size of the polar regions with this exaggeration reducing as one moves towards the equator. Other projections introduce other distortions. Since the earth's axis is tilted, the NS for the Terminator are different from the geographic NS and as a result the terminator appears as a curve. Its exact shape is determined by the projection used even though in reality it is a straight line.

BEARING

1. A, B and C are three ships. The bearing of A from B is 045º. The bearing of C from A is 135º. If AB= 8km and AC= 6km, what is the bearing of B from C?

2. A helicopter pilot flies in the direction 147 degrees and lands when she is 12 km south of her starting point. How far did she fly?

Tanx can be written as tan0.5x by dividing it by 2.

tanx1/2=tan0.5x

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I doubt that you can, since the tangent of the whole angle is a function of the tangent of the half-angle and of the secant of the whole angle. Please see the link.

An obtuse angle.

you have to do the arcsin which is sin-1 on your calculator. i have not met anyone in my life who can do sin or arcsin in their head. not even my college teachers.

your theta is equal to 20degrees

Use a protractor.

Use the tangent ratio:

tan = 22.5/34 = 45/68

tan-1(45/68) = 33.49518467 degrees

Angle of elevation = 33o29'42.66''

y=sin x

y=cos x cos x

sin x = cos^2 x

sin x = 1-sin^2 x

sin x -1 + sin^2 x = 0

sin^2 x + sin x -1 = 0

Let y=sin x

y^2+y-1 = 0

This equation is of form ay^2+by+c=0

a = 1 b = 1 c = -1

y=[-b+/-sqrt(b^2-4ac)]/2a]

y=[-1 +/-sqrt(1^2-4(1)(-1)]/(2)(1)

discriminant is b^2-4ac =5

y=[-1 +√(5)] / 2

y=[-1 -√(5)] / 2

sin x = [-1 +√(5)] / 2

x = sin^-1 [-1 +√(5)] / 2] = 0.6662394 radians

x = sin^-1 [-1 -√(5)] / 2] = sin^-1 (-1.618) -- has no solution

When x = 0.6662394 radians, sin x and cos x times cos x are equal.

If the angle is x radians, then tan(x) = 1/20 = 0.05

So x = tan-1(0.05) = 0.04996 radians = 2.86 degrees (approx)

nah

tan(3x)=1

3x= PI/4

x=PI/12 is the smallest positive number

10 * sine(9) = 1.5643

A stack of this height could be made with 1.000, .350, .114 and .1003 blocks for the minumum number of blocks.

You use the arcsine or sin-1 function. For any value of sin(X), the function will return a value for the angle in the range [-pi/2, pi/2]. There are, however, infinitely many angles which will have the same value for sine. They are

X + 2k*pi and (2k+1)*pi - X radians where k is any integer.

If you still work with degrees, the answers are

X + 360k and (2k+1)*180 - X degrees.

I assume. Since theta is a variable, standing for the measure of any angle.

cos(75 deg) = 0.2588, approx.

26 = 64

There are 2 cups in a pint. There are 2 pints in a quart. There are 4 pints in a half gallon, like if you bought a half a gallon if milk at a store. There are 8 pints in a gallon.

10 pints equals 20 cups.

10 pints equals 5 quarts

10 pints equals 2 and a half gallons.

10 pints equals 1 and a quarter gallons.

Hope I helped!