Trigonometry (6) Flashcards by Nick Duley

Q

sin45

A

1/¬2

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Q

cos45

A

1/¬2

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Q

tan45

A

1

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Q

sin30

A

1/2

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Q

cos30

A

¬3/2

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Q

tan30

A

1/¬3

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Q

sin60

A

¬3/2

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Q

cos60

A

1/2

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Q

tan60

A

¬3

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Q

Find an obtuse angle using the ambiguous case

A

sin pheta = sin(180 - pheta)

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Q

Solve sine equations

A

180 - pheta

Then keep adding 360 to pheta

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Q

Solve cosine equations

A

360 - pheta

Then keep adding 360 to pheta

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Q

How to change sine to cos

A

sin(90 - pheta) = cos

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Q

How to change cos to sine

A

cos(90 - pheta) = sin

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