Understanding Trigonometry with Special Triangles

It is a waste of time compared to using special triangles.

It is too complex to understand.

It is not used in advanced mathematics.

It is only applicable to certain problems.

1, 1, 2

1, 1, square root of 2

1, 2, square root of 3

2, 2, square root of 3

Equilateral triangle

30-60-90 triangle

Isosceles triangle

45-45-90 triangle

Subtract 30 degrees from 180 degrees

Add 30 degrees to 120 degrees

Add 60 degrees to 90 degrees

Subtract 60 degrees from 180 degrees

-1

1

0

Undefined

Equilateral triangle

Scalene triangle

45-45-90 triangle

30-60-90 triangle

A small angle opens to a small side

A large angle opens to a small side

Angles and sides are unrelated

A small angle opens to a large side

By using the Pythagorean theorem

By using trigonometric identities

By matching the smallest angle to the smallest side

By measuring with a ruler

It requires less memorization and enhances understanding.

It is faster to calculate.

It is more accurate.

It is applicable to all types of triangles.

2

1

None of the above

Square root of 3