Solving Word Problems Involving Multiple-Angle Identities (7.6.3)

Question 1

• Multiple-angle identities involve trigonometric functions of multiples of an angle θ (such as 2θ or 3θ). The most commonly used multiple angle identities are the double-angle identities.

Answer 1

• Multiple-angle identities involve trigonometric functions of multiples of an angle θ (such as 2θ or 3θ). The most commonly used multiple angle identities are the double-angle identities.

Question 2

• Trigonometry has many practical applications.

Answer 2

• Trigonometry has many practical applications.

Question 3

• Review: Area of a rectangle: base · height.

Answer 3

• Review: Area of a rectangle: base · height.

Question 4

• Review: Area of a triangle: 1/2 * base * height.

Answer 4

• Review: Area of a triangle: 1/2 * base * height.

Question 5

• Review: In the point (x,y), x represents the base, or horizontal distance from a central point, and y represents the height, or vertical distance from that same central point.

Answer 5

• Review: In the point (x,y), x represents the base, or horizontal distance from a central point, and y represents the height, or vertical distance from that same central point.