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7 results for Trigonometry in lessons.
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Lesson
Radians and the Trigonometric Functions
Trigonometric Functions
Degree and radian measure, arc length, the six functions on the unit circle, their signs, ranges and periods.
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Lesson
Slope and the Angle Between Lines
Straight Lines
Slope and inclination, parallel and perpendicular lines, collinearity, and the angle between two lines.
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Lesson
Radians and the Trigonometric Functions, Worked Solutions
Trigonometric Functions
Step-by-step solutions to every practice question in the lesson “Radians and the Trigonometric Functions”, with each answer checked.
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Lesson
Trigonometric ratios and measuring angles
Advanced Trigonometry
The six ratios defined from a point, the reciprocal, quotient and Pythagorean identities, and degrees, grades and radians with the radian values to know.
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Lesson
Angles and their measurement
Trigonometric Ratios and Applications
An angle as a rotation, positive and negative angles, the sexagesimal, centesimal and radian systems, conversions between them, and the arc length l = rθ.
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Lesson
Trigonometric identities
Trigonometric Ratios and Applications
The identities sin²θ + cos²θ = 1, sec²θ − tan²θ = 1 and cosec²θ − cot²θ = 1, their useful forms, higher powers of sine and cosine, and proving identities.
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Lesson
Conceptual problems: least values and angle sums
Trigonometric Ratios and Applications
Least values from AM ≥ GM, square roots as absolute values, and sums that collapse over complementary, supplementary and related angles.