← Geometry Chapter 7 Right Triangles Flashcards Test
5 Written Questions
5 Multiple Choice Questions
 The angle formed when looking down from the horizontal
 Ratios formed by the sides of a right triangle. Useful in finding the missing sides of a right triangle given an angle and a side. Trigonometric ratios include sine (sin), cosine (cos), and tangent (tan). Other ratios (not covered in this chapter) are: cosecant, secant, and cotangent
 In a right triangle with legs a and b and hypotenuse c, a^2 + b^2 = c^2
 trigonometric ratio: abbreviation sin; the sine of an acute angle in a right triangle equals the side opposite the angle divided by the hypotenuse (sin A = opp/hyp)
 Means finding any missing angles and/or sides in a triangle. Methods to solve a right triangle include the Pythagorean theorem, triangle sum theorem (if given one acute angle in a right triangle, we can find the other by subtracting the acute angle's measure from 90), trig ratios, and inverse trig functions
5 True/False Questions

tangent → trigonometric ratio: abbreviation tan; the tangent of an acute angle in a right triangle equals the side opposite the angle divided by the adjacent side (tan A = opp/adj)

Inverse Trig Ratio → Ratios formed by the sides of a right triangle. Useful in finding the missing sides of a right triangle given an angle and a side. Trigonometric ratios include sine (sin), cosine (cos), and tangent (tan). Other ratios (not covered in this chapter) are: cosecant, secant, and cotangent

Acute triangle → In a triangle with shorter sides a and b and longer side c, if a^2 + b^2 > c^2, then the triangle is acute

Obtuse triangle → In a triangle with shorter sides a and b and longer side c, if a^2 + b^2 > c^2, then the triangle is acute

454590 right triangle → Special right triangle: isosceles right triangle where the legs are congruent and the hypotenuse = leg * sqrt(2)