Math - Special Angles Flashcards by Sundae Cones | Brainscape

Q

sin0°

A

0

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Q

sin30°

A

1/2

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Q

sin45°

A

1/√2

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Q

sin60°

A

√3/2

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Q

sin90°

A

1

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Q

cos0°

A

1

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Q

cos30°

A

√3/2

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Q

cos45°

A

1/√2

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Q

cos60°

A

1/2

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Q

cos90°

A

0

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Q

tan0°

A

0

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Q

tan30°

A

1/√3

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Q

tan45°

A

1

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Q

tan60°

A

√3

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Q

tan90°

A

undefined

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Q

Can I leave the denominator as a surd?

A

No. Rationalise the fraction.

Q

Relationship between sinA and sin(180-A)?

A

The same

Q

Relationship between cosA and cos(180-A)?

A

Becomes negative or positive (whichever is the opposite)

Q

Relationship between tanA and tan(180-A)?

A

tan(180∘−A)=−tanA –> same as cosine