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Unit 14: See the right triangle

Name the sides and the ratios

Read this before the quizzes

See the right triangle

Sine, cosine and tangent

The flips: cosec, sec, cot

Sine from sides

Tangent from sides

Secant

Answers and why: sides and ratios

The table of standard values

Where the table comes from

The two special triangles

Evaluating expressions

Adding table values

A 45-45-90 triangle

Two tangents

Answers and why: standard values

Pairs, identities and radians

Complementary angles

The three identities

Degrees and radians

Complement

Tangent identity

Radians

Answers and why: pairs, identities and radians

Heights and distances

Elevation and depression

Shadows and ladders

Two points and more than one angle

Tower at 45°

Shadow

Ladder

Answers and why: heights and distances

Word problems and slips

A sketch routine for word problems

Ten slips to watch for

The formula cards

Your pace for this unit

Your mission this week

Cosec and cot

Kite

Answers and why: word problems and slips

Self-check: can you do it?

Trigonometry for aptitude and employment tests. This unit has one move: see the right triangle.

Quantitative Aptitude Unit 14: Trigonometry, see the right triangle

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