What is cos^2(x)-sin^2(x) ?

The solution to cos^2(x)-sin^2(x) is cos(2x)

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simplify cos^2(x)-sin^2(x)

simplify

cos^{2} (x) - sin^{2} (x)

cos (2 x)

Solution steps

cos^{2} (x) - sin^{2} (x)

Use the Double Angle identity:

cos^{2} (x) - sin^{2} (x) = cos (2 x)

= cos (2 x)

x^{2} \times y^{2}

6 c + 4 d - c - 7 d

(3 x + 3) (2 x + 9)

6 x^{3} - 8

49 - 16 x^{2}