## Sunday, February 20, 2011

## Sunday, February 13, 2011

## Friday, January 30, 2009

### Trig Ratios SOH CAH TOA - 20:58

KEY CONCEPTS:

ONLY for RIGHT ANGLED TRIANGLES

SOH-CAH-TOA

SOH - sinA=opp/hyp

CAH - cosA=adj/hyp

TOA - tanA=opp/adj

Longest side of right angled triangles is called the HYPOTENUSE. Always found on the opposite side of the right angle of the triangle.

To find the angle use the inverse of the trig buttons on your calculator.

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### Angle Relationships - 20:58

KEY CONCEPTS:

Complementary Angles = 90

Supplementary Angles = 180

Opposite Angles = one another

Parallel Lines with a Transverse through it:

Corresponding Angles = one another (F-Shape)

Co-Interior Angles add up to 180

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