What is the exact value of sin 420?

Joe Ford

What is the exact value of sin 420?

sin420=1sin420=2√33.

How do you find sin42?

Using these results – sine 15° sin(A + B) = sin A cos B + cos A sin B, we can find the sine of (45° + 30°) to give sine of 75 degrees. We now find the sine of 36°, by first finding the cos of 36°.

What is exact value of sin?

Trigonometry Examples Apply the reference angle by finding the angle with equivalent trig values in the first quadrant. Make the expression negative because sine is negative in the fourth quadrant. The exact value of sin(30) is 12 .

What is value of sin 120 degree?

By using the value of cosine function relations, we can easily find the value of sin 120 degrees. Using the trigonometry formula, sin (90 + a) = cos a, we can find the sin 120 value. We know that the value of cos 30 degrees is √3/2. Therefore, sin 120° = √3/2.

What is value of sin 180?

The exact value of sin 180 is zero. Sine is one of the primary trigonometric functions which helps in determining the angle or sides of a right-angled triangle.

Why is sin 90 a cosa?

All triangles have 3 angles that add to 180 degrees. Therefore, if one angle is 90 degrees we can figure out Sin Theta = Cos (90 – Theta) and Cos Theta = Sin (90 – Theta).

Why is tangent 45 degrees equal 1?

Answer. ok, the tangent of 45 degrees is equal to one because of the sides of a triangle, namely a right isosceles triangle. In this case, the tangent would be the opposite side, which is 1, upon the adjacent side, which is also 1, since the angle is 45 degrees. So, the tangent of 45 degrees is 1/1, which is 1.

What is the value of cot 0?

Notice, we have indeterminate form, so cot(0) is undefined.

What is the value of Tan pi by 2?

We see tanπ2=sinπ2cosπ2=10 which is undefined in mathematics. Easily speaking it is geometrically infinite and algebraically undefined.

What has the same value as Tan PI 4?

Trigonometry Examples The exact value of tan(π4) tan ( π 4 ) is 1 .

What is the opposite of CSC?

Cosecant, Secant and Cotangent

Cosecant Function: csc(θ) = Hypotenuse / Opposite
Secant Function: sec(θ) = Hypotenuse / Adjacent
Cotangent Function: cot(θ) = Adjacent / Opposite

What is the difference between SOH CAH TOA?

SOH stands for Sine equals Opposite over Hypotenuse. CAH stands for Cosine equals Adjacent over Hypotenuse. TOA stands for Tangent equals Opposite over Adjacent.

What does CSC stand for in math?

cosecant

What does cot stand for?

COT

Acronym Definition
COT Cause of Transmission
COT Commissioned Officer Training course
COT Certificate of Transport
COT Channel of Trade

What does sin stand for in math?

sine of an angle