Day 4 Problems 3507

1
Day 4 Problems 3/5/07

• Graph each inequality.
• 1. y x2 10x 25 2. y gt - 2x2 4x 3
• Solve each inequality algebraically.
• 3. x2 6x 7 lt 0 4. x2 x 12 gt 0
• 5. x2 lt 10x 25

2
13.1 Right Triangle Trigonometry

• Trigonometry the study of relationships among
  the angles and the sides of a right triangle.
• Trigonometric functions
• Sine (sin)
• Cosine (cos)
• Tangent (tan)
• Cosecant (csc)
• Secant (sec)
• Cotangent (cot)

B
Opposite Leg
hypotenuse
?
A
C
Adjacent Leg
3
Trigonometric Functions

• ? is the measure of an acute angle of a right
  triangle.
• Opp measure of the leg opposite ?.
• Adj measure of the leg adjacent to ?.
• Hyp measure of the hypotenuse.