Trig Values on the unit circle
AB
cos pi/20
sin pi/21
cos 2pi/3-1/2
cos 3pi/4-sqroot2/2

Also know, what is cos pi by 2?

The exact value of cos2) cos ( π 2 ) is 0 . 0.

One may also ask, what is the value of cos 2 pi by 3? The exact value of cos(π3) cos ( π 3 ) is 12 .

Simply so, what is the exact value of cos pi?

Apply the difference of angles identity. The exact value of cos(π4) cos ( π 4 ) is √22 .

What is the sine value of pi?

Trig Values on the unit circle

AB
sin pi0
cos pi-1
tan pi0
sin 7pi/6-1/2

## What is the value of sin Pi by 3?

The exact value of sin3) sin ( π 3 ) is √32 .

## What is the secant?

[ sē′kănt′ ] A straight line or ray that intersects a curve, especially a circle, at two or more points. The ratio of the length of the hypotenuse in a right triangle to the side adjacent to an acute angle. The secant is the inverse of the cosine.

## What is the value of sin 5 pi by 2?

sin(5π2)=1 , cos(5π2)=0 , tan(5π2)=∞ , cot(5π2)=0 , sec(5π2)=∞ and csc(5π2)=1 .

## What is the mean of pi?

Definition: Pi is a number – approximately 3.142. It is the circumference of any circle divided by its diameter. The number Pi, denoted by the Greek letter π – pronounced ‘pie', is one of the most common constants in all of mathematics. It is the circumference of any circle, divided by its diameter.

## What is the value of cos 3 pi by 4?

The exact value of cos 3pi/4 is -1/√2. In a right triangle, the cosine angle is divide the length of hypotenuse (H) by the length of the adjacent side (A). The word sine comes from the Latin word sinus and the prefix ‘co' with sine make the cosine word.

√33

## What is the value of Cos Pi by 4?

The exact value of cos4) cos ( π 4 ) is √22 .

## How do you find Cos Pi 8?

cos8)=cos(π42)=?? ??1+cos(π4)2=?? ??1+√222=?? ??2+√222=√2+√24=√2+√22 .

## What is the exact value of pi 12?

Calculator –> sin(π12)=sin15∘=0.26 .

## What is cos pi 12 on the unit circle?

cos(π12)=√64+√24.

## What is cos theta formula?

The Cos Θ is the ratio of the adjacent side to the hypotenuse, where (Θ is one of the acute angles. The cosine formula is as follows: Cos Theta = frac{Adjacent}{Hypotenuse}

## What is the exact value of tan 0?

The exact value of tan(0) is 0 .