Leaving Cert Trigonometry 1 Set C Questions - L.C. Maths

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Algebra 1

0/14

Algebraic Fractions

Binomial Expansions

Algebraic Identities

Linear Equations

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Quadratic Equations

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Sine, Cosine & Tangent

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Area of a Triangle

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Coordinate Geometry of the Circle

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Algebra 3

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Quadratic & Rational Inequalities

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Introduction to Complex Numbers

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Compound Interest

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Length, Area & Volume

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Sectors of Circles

Trapezoidal Rule

Probability 2

0/9

Expected Values

Bernoulli Trials

The Independence of Events

Functions

0/15

Set Representation of Relations

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Graphing Similar Relations

Introduction to Functions

Inverses & Compositions

Types of Functions

Exponential Functions

Logarithmic Functions

Functions & Graphs

Statistics 2

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Scatter Diagrams

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Inferential Statistics

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Population Proportions

Central Limit Theorem

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Digital Lessons

About Lesson

Start with the quiz…

Knowledge Check Quiz

EXAMS.IE

Unit Circle

Hint

Each point on the circumference has coordinates \((\cos\alpha,\sin\alpha)\).

1 / 5

The \(x\) coordinate on the circumference of the unit circle corresponds to which of the following?

\(\cos\alpha\)

\(\sin\alpha\)

\(\tan\alpha\)

Each point on the circumference has coordinates \((\cos\alpha,\sin\alpha)\).

That's right!

Each point on the circumference has coordinates \((\cos\alpha,\sin\alpha)\).

Hint

Each point on the circumference has coordinates \((\cos\alpha,\sin\alpha)\).

2 / 5

The \(y\) coordinate on the circumference of the unit circle corresponds to which of the following?

\(\cos\alpha\)

\(\sin\alpha\)

\(\tan\alpha\)

Each point on the circumference has coordinates \((\cos\alpha,\sin\alpha)\).

That's right!

Each point on the circumference has coordinates \((\cos\alpha,\sin\alpha)\).

Hint

Each point on the circumference has coordinates \((\cos\alpha,\sin\alpha)\).

3 / 5

If \((x,y)\) is the coordinate of a point on the unit circle, which of the following refers to \(\tan\alpha\)?

\(x+y\)

\(x-y\)

\(x\timesy\)

\(\dfrac{y}{x}\)

Each point on the circumference has coordinates \((\cos\alpha,\sin\alpha)\).

That's right!

Each point on the circumference has coordinates \((\cos\alpha,\sin\alpha)\).

Hint

\(\cos\alpha\) refers to the \(x\) coordinate of a point on the unit circle.

4 / 5

\(\cos(-\alpha)=\cos\alpha\)

True

False

\(\cos\alpha\) refers to the \(x\) coordinate of a point on the unit circle.

That's right!

\(\cos\alpha\) refers to the \(x\) coordinate of a point on the unit circle.

Hint

\(\sin\alpha\) refers to the \(y\) coordinate of a point on the unit circle.

5 / 5

\(\sin(-\alpha)=\sin\alpha\)

True

False

\(\sin\alpha\) refers to the \(y\) coordinate of a point on the unit circle.

That's right!

\(\sin\alpha\) refers to the \(y\) coordinate of a point on the unit circle.

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