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#Trigonometry is all about #triangle measurement – it's essentially a tool used to measure distance and height.

is all about measurement – it's essentially a tool used to measure distance and height.

Law of Cosines: can find a third side of a triangle if you know two sides and the angle between them; can use to determine the grade or steepness of a slope or to determine the distance to a star

Law of Cosines: can find a third side of a triangle if you know two sides and the angle between them; can use to determine the grade or steepness of a slope or to determine the distance to a star

The distance formula in rectangular (Cartesian) coordinates is the Pythagorean Theorem in disguise.  A lot of my students like this explanation.  It helps build off of knowledge that they already have from geometry.

The distance formula in rectangular (Cartesian) coordinates is the Pythagorean Theorem in disguise. Students like this explanation. It helps build off of knowledge that they already have from geometry.

Trigonometry by Hikaru-ki on DeviantArt

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About the Law of Cosines | #trigonometry #math

Law of cosine relates the two sides and a angle between them to the third side of any triangle. This is called law of cosines formula in mathematical form.

... of two triangles showing the

of two triangles showing the

Trigonometry for all Triangles | Maths Numeracy Educational Posters

Trigonometry for all Triangles Maths Numeracy Educational Posters

#Sin, #Cos, #Tan

Trigonometry Help at Its Very Best

Soh-cah-toa works if the angle is greater than 0 and less than 90 degrees; cost = adj/hyp, sint = opp/hyp, cost = x/1 = x = x coordinate where terminal side of angle intersects the unit circle; sint = y/1 = y = y coordinate where the terminal side of angle intersects the unit circle; tant = sint/cost = y/

Soh-cah-toa works if the angle is greater than 0 and less than 90 degrees; cost = adj/hyp, sint = opp/hyp, cost = x/1 = x = x coordinate where terminal side of angle intersects the unit circle; sint = y/1 = y = y coordinate where the terminal side of angle intersects the unit circle; tant = sint/cost = y/

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