MATH

    Cards (8)

    • What is the formula for cos2A\cos 2A in terms of cos2A\cos^2 A?

      cos2A=\cos 2A =2cos2A1 2 \cos^2 A - 1
    • What is another formula for cos2A\cos 2A in terms of sin2A\sin^2 A?

      cos2A=\cos 2A =12sin2A 1 - 2 \sin^2 A
    • What is the third formula for cos2A\cos 2A?

      cos2A=\cos 2A =cos2Asin2A \cos^2 A - \sin^2 A
    • What is the formula for sin2A\sin 2A?

      sin2A=\sin 2A =2sinAcosA 2 \sin A \cos A
    • What is the formula for tan2A\tan 2A?

      tan2A=\tan 2A =2tanA1tan2A \frac{2 \tan A}{1 - \tan^2 A}
    • What is the definition of tanA\tan A?

      tanA=\tan A =sinAcosA \frac{\sin A}{\cos A}
    • What is the Pythagorean identity involving sin2A\sin^2 A and cos2A\cos^2 A?

      sin2A+\sin^2 A +cos2A= \cos^2 A =1 1
    • What is the relationship between 1+1 +tan2A \tan^2 A and sec2A\sec^2 A?

      1+1 +tan2A= \tan^2 A =sec2A \sec^2 A
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