Sin 45 value: Learn how to derive

Learn how to derive the value of sin(π/4) in fraction and decimal form in theoretical and practical geometrical methods in trigonometry. Learn how to find the exact value of sine of 45 degrees as a fraction or a decimal. Use the sin (x) calculator to find the sine of any angle in degrees or radians. Learn how to calculate the sine of 45 degrees and other angles using the trigonometry ratios and table. Find the values for sin, cos and tan for degrees and radians with examples and formulas. Sin 45°: All about sin 45 degrees, incl. the trigonometric identities. Besides the value of sin45°, we also have useful information and a calculator.