




Discover how to measure angles, distances, and heights using trigonometric ratios and the unit circle. Learn how to use sine, cosine, and tangent to solve real-world problems involving triangles and circular motion.
Test your understanding of {unit name}.
단위원 위에서 정의한 삼각함수에 대해 복습해 봅시다.
Aprende cómo las razones trigonométricas se extienden a todos los números reales mediante el uso del álgebra. Empieza a resolver problemas sencillos que implican esta nueva definición de las funciones trigonométricas.
Aprende cómo utilizar el círculo unitario para definir seno, coseno y tangente para todos los números reales.
Descubra como medir ângulos, distâncias e alturas usando razões trigonométricas e o círculo trigonométrico. Aprenda a usar seno, cosseno e tangente para resolver problemas do mundo real que envolvem triângulos e movimento circular.
If you wanted to draw the unit circle around them, you know that the radius of the unit circle = the hypotenuse of the triangle = 1, so the vertex of the triangle that does NOT lie on the x-axis is the one that would lie on the circle.
Review the unit circle definition of the trigonometric functions.
Practice your understanding of the unit circle definition of sine and cosine.





