Identities
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 Hundreds of printable worksheets on identities let you practice what you have learned by watching the video tutorials.
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Sine Cosine Tangent Video Clip
Sine Cosine Tangent
Video Clip Length: 2 minutes 18 seconds
Video Clip Views: 35071
This clip gives the definitions of the trigonometric functions sine, cosine and tangent.
curves, functions, identities, plane figures, shapes, trigonometric functions, trigonometric identities
Finding Trigonometric Values Using Sohcahtoa Video Clip
Evaluating Trigonometric Expressions Using Sum Of Two Angles Identity Video Clip
Evaluating Trigonometric Expressions Using Pythagorean Identity 2 Video Clip
Evaluating Trigonometric Expressions Using Double Angle Identity Video Clip
Evaluating Trigonometric Expressions Using Double Angle Identity 2 Video Clip
Evaluating Trigonometric Expressions Using Difference Of Two Angles Identity Video Clip
Evaluating Trigonometric Expressions Using Pythagorean Identity Video Clip
Ratio Identities Video Clip
Ratio Identities
Video Clip Length: 2 minutes 20 seconds
Video Clip Views: 8104
functions, identities, ratio identities, trigonometric functions, trigonometric identities
Reciprocal Identities Video Clip
Reciprocal Identities
Video Clip Length: 2 minutes 25 seconds
Video Clip Views: 6741
functions, identities, reciprocal identities, trigonometric functions, trigonometric identities
Top Identities Word Problems

A man on a 135ft vertical cliff looks down (#2873)
A man on a 135ft vertical cliff looks d... ...s the friend from the base of the cliff?
curves, functions, identities, plane figures, polygons, pythagorean theorem, right triangles, shapes, sohcahtoa, triangles, trigonometric functions, trigonometric identities

A ladder rests against a wall (#2926)
A ladder rests against a wall. the top o... ...3 with the wall. how long is the ladder?
functions, identities, sohcahtoa, trigonometric functions, trigonometric identities

A ramp is at an angle of elevation (#1987)
A ramp is at an angle of elevation of 30... ...meters. What is the lenght of the ramp?
functions, identities, sohcahtoa, trigonometric functions, trigonometric identities

From the top of a lighthouse (#1560)
From the top of a lighthouse 160 feet ab... ...the boat to the base of the lighthouse?
functions, identities, sohcahtoa, trigonometric functions, trigonometric identities

A ski slope at a mountain has an angle of elevation (#2257)
A ski slope at a mountain has an angle o... ...is 1808 feet. How long is the ski slope?
functions, identities, sohcahtoa, trigonometric functions, trigonometric identities
See All Identities Word Problems
Homework Help Questions
 cos 3 t = cos^{3} t  3 sin^{2} t cos t
 tan 59
 a=8.5 c = 14.2
 Prove the identity: cos3x=4cos x3cos x
 Find the exact value of tan(105°). Use a sum or difference identity.
 a bus traveling 40 mi/h and a car traveling 50 mi/h cover the same distance? The bus travels1 h more than a car how many hours did each travel
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Hundreds of video clips, worksheets, and word problems on trigonometric identities.