Right triangle has one 90° angle and is the basis of trigonometry. Hypotenuse is the longest side opposite the 90° angle. Triangle sides are denoted by a, b, c, with c being hypotenuse. Altitude (h) divides triangle into two similar triangles
Altitude is a line segment through vertex perpendicular to opposite side. Altitude length (h) is distance from foot to apex. Altitude length equals half of base length (A=hb/2). Longest altitude is perpendicular to shortest side
Cosine 120 equals -½ or -0.5. Trigonometry deals with relationships between angles and sides of right triangles. Right triangle has one 90° angle and two angles less than 90°
Trigonometric ratios are derived from right-angled triangle sides. Three primary functions: sine, cosine, and tangent. Trigonometric ratios help find missing angles and sides in triangles
Perimeter is the total distance around a triangle. Formula: P = a + b + c for any triangle. Example: 5 + 5 + 5 = 15 for equilateral triangle
Right triangle has one 90-degree angle and two equal legs. Calculator provides various calculations for edge lengths, altitude, angles, area, perimeter