What is cos^2(5y)-sin^2(5y) ?

The solution to cos^2(5y)-sin^2(5y) is cos(10y)

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simplify cos^2(5y)-sin^2(5y)

simplify

cos^{2} (5 y) - sin^{2} (5 y)

cos (10 y)

Solution steps

cos^{2} (5 y) - sin^{2} (5 y)

Rewrite using trig identities

= cos (10 y)

x^{5} - 4 x^{4} + 10 x^{2} - x - 6

1. 5^{5}

8 (- 4)

x csc (x) + cos (x) sec (x)

5 \frac{2}{3} - \frac{1}{4}