2 Answered Questions for the topic Double Angle

Double Angle Trigonometry Identities

04/07/21

Use identities to rewrite tan^2 x(1 + cot^2 x) in terms of sin x and cos x. Then simplify so that no quotients appear.

My way of going about this was to use the double angle identity for tangent but there's 3 formulas for it.tan2x =2tanx/1-tan2 x =2cotx/cot2 x-1= 2/cot x – tan xI don't understand how to figure out... more
Double Angle Math Trigonometry Math Help

01/05/14

Use the double angle formulas to determine: A. cos120degrees and B. tan300degrees

This is for my trig class, thanks for the help!

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