Trigonometric Values of 45 Degree

Trigonometric values (sine, cosine, tangent, etc.) of a 45-degree angle are special because they have exact values that can be expressed without decimals.

Below are the main trigonometric values for a 45-degree angle:

  • Sine (sin): sin(45°) = √2 / 2 = 1/√2
  • Cosine (cos): cos(45°) = √2 / 2 = 1/√2
  • Tangent (tan): tan(45°) = 1

There are other trigonometric functions like cotangent (cot), secant (sec), and cosecant (CSC), but these can be derived from the sine and cosine values using trigonometric identities.

Trignometric Fucntion

Value at 45 Degree

Sine (45°)

√2 / 2 = 1/√2

Cosine (45°)

√2 / 2 = 1/√2

Tangent (45°)

1

Cosec (45°)

√2

Sec (45°)

√2

Cot (45°)

1

45 Degree Angle: Construction and Examples

45-degree angle is a fundamental concept in geometry and trigonometry. An angle is a form of geometrical shape constructed by joining two rays to each other at their endpoints. The two lines joined together are called the arms of the angle.

A 45-degree angle is exactly half of a right angle, which measures 90 degrees. Two 45-degree angles placed together form a right angle. In degrees, a 45-degree angle is 45/360 of a complete circle since its measure is between 0 and 90 degrees, a 45-degree angle is classified as an acute angle.

45 Degree Angle

In this article, we will learn about, a 45-degree angle, how to draw a 45-degree angle using a compass and protractor, the properties of a 45-degree angle trigonometric values of a 45-degree angle and others in detail.

Table of Content

  • What is the 45-degree angle?
  • How to draw 45 degrees Angle using Compass
  • How to draw 45 degrees Angle using Protractor
  • Properties of 45-degree Angle
  • Trigonometric values of 45 degree
  • Solved examples on 45-degree Angle
  • 45 degree Angle – FAQs

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