Chapter 7 & 8 Trigonometry
Similar Triangles:
Similar shapes have the same shape but are not the same size.
Two triangles are similar if..?
The corresponding angles are equal.
The lengths of the
corresponding sides are
proportional.
Solve the quadratic equation x squared - 7x + 10 = 0 by factoring.
The solutions are x = 2 and x = 5.
The hypotenuse is the ________ side and is located directly across the ____________
LONGEST, right angle
What is the standard form of a quadratic equation?
It is ax squared + bx + c = 0, where a,b, and c are constants, and x is the variable raised to the power of 2.
In a right-angled triangle, one leg has a length of 9 units, and the hypotenuse is 15 units. Find the length of the other leg.
The length of the other leg is 12 units.
Graphing quadratic equations is said to be convenient when they are in ______ Form. Therefore, when given a function in _______ Form, we use a method of rewriting the equation, known as COMPLETING THE SQUARE.
Vertex, Standard
What are the three abbreviations for trigonometric functions used in mathematics.
Sin, Cos, Tan
What do we call We call b squared - 4ac?
The DISCRIMINANT!
Sin: opposite/hypotenuse
Cos: adjacent/hypotenuse
Tan: opposite/adjacent
Determine the nature of the roots for the following: 25xsquared + 9 = 30x