Trigonometry

A=pi*r^2, so to find the radius, divide the area by pi and take the square root of that quotient. theta/360=arc length/circumference. C=2pi*r, so multiply the radius you found above by 2pi. Then you have theta/(known value)=(known value)/(known value), so you can now solve for theta!

Draw a right triangle. To get a tangent of 2, the side opposite the angle might be 2, the adjacent side might be 1 (other combinations, in the ratio 2:1, are also possible). In this case, the hypothenuse is square root of 5 (Law of Pythagoras). Therefore, the cosine is 1 / square root of 5.

Use the sine ratio to find the height of the kite:

sine = opposite (height of kite with the horizontal) divided by the hypotenuse (the string)

Rearrange the formula:

sine*hypotenuse = opposite

sine 25 degrees*150 = 63.39273926 feet

Height of kite above the ground: 63.39273926+4.5 = 67.89273926 feet

Therefore the kite is 68 feet above the ground to the nearest foot

It is -pi/4 radians = -45 deg.

cos(15 deg) = 0.9659, approx.

99-100 cm

The solutions are (4n - 1)*pi/2 for all integer values of n.

If you are looking for the angle of elevation from the ground to the top of Qutub Minar, here is a solution. Qutub Minar is 72.5 meters tall. The angle of elevation would equal arctan(72.5/5). It comes out to approximately 86.05 degrees.

Nitrogen

Using the cosine rule diagonal BD is 6.08 mm which splits angle 95 degrees into angles of 34.5 degrees and 60.5 degrees and so the area of the quadrilateral is:-

0.5*6.08*3.4*sin(34.5) plus 0.5*6.08*4.3*sin(60.5) = 17.232 square mm

Abcd is a cyclic quadrilateral whose diagonals intersect ata point E.If <dbc=70 and <bac=30. Find <bcd further ab=bc, find <ecd

they add up to 180 degrees

The equation cannot be proved because of the scattered parts.

tan(10 deg) = 0.1063, approx.

trigonometric table gives the values of all the trigonometric functions for any angle.

i.e; it gives the numerical values of sine, cosine, tangent etc for any angle between 0 to 180 degrees the values for other angles can be calculated using these.

It is in the Northern and Western hemispheres.

it only has 1 ok

sin2a=

Using the formula: tangent = opposite/adjacent whereas tangent angle = height/ground distance, will help to solve the problem

-- The sin of 1 degree is 0.01745. (rounded)

-- The sin of 1 radian is 0.84147. (rounded)

-- The sin of 1 grad is 0.01571. (rounded)

The question contains an expression but not an equation. An expression cannot be solved.

First, the circumference of an 18 inch wheel is 18 * pi = 56.549 inches.

80 miles per hour is 80 * 5280 * 12 = 5069000 inches per hour. This is 5069000 / 3600 = 1408.06 inches per second.

So, 1408.06/56.549 = 24.90 rev per second.

The contributions of Arab scholars was trigonometry. They also contributed other thing such as their intelligence . :D :)

(rise)/(run)

Anything you like as long as you specify what is being represented.