**What Is The Cos Of 45**. Apply the identity of the sum of angles. Cos 30° = sin 60° = √3/2.

How do you solve sin 45 without a calculator? The approximate value of cos 45 is equal to 0.7071. What is the value of sin45∘sin30∘ cos45∘cos30∘?

### Cos 30° = Sin 60° = √3/2.

Cos (45) = sin (45) you can see this as follows: Evaluate each of the following. What fraction is cos 90?

### Cos(45°) = 1/\Sqrt{2} Cos^2(45°) = (Cos(45°))^2 = (1/\Sqrt{2})^2 = 1/2.

The exact value of cos 45 degrees is 1/√2 (in surd form), which is also equal to sin 45 degrees. Imagine a circle with radius 1. The value of cos 45° is equal to 1/√2.

### All The Sine And Cosine.

Make a right angle triangle with adjacent and opposite sides length 1. A) cos ( 45) =. 47 rows for memorising cos 0°, cos 30°, cos 45°, cos 60° and cos 90°.

### Imagine A Circle With Radius 1.

Tan(45^@)=1 sin(45^@)=sqrt2/2 cos(45^@)=sqrt2/2 45^@ is a special angle, along with 30^@, 60^@, 90^@, 180^@, 270^@, 360^@. The #cos 45 =1/sqrt2= sqrt2 /2# answer link. Cos is the opposite of sin.

### Cos 90° = 0 Also, It Is Easy To Remember The Special Values Like 0°, 30°, 45°, 60°, And 90° Since All The Values Are Present In The First Quadrant.

Cos 0° = sin 90° = 1. Apply the identity of the sum of angles. The approximate value of cos 45 is equal to 0.7071.