What is sqrt(1-sin^2(k)) ?

The solution to sqrt(1-sin^2(k)) is sqrt(cos^2(k))

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simplify sqrt(1-sin^2(k))

simplify

1 - sin^{2} (k)

cos^{2} (k)

Solution steps

1 - sin^{2} (k)

Rewrite using trig identities

= cos^{2} (k)

(sin^{2} (t) - cos^{2} (t)) d t

sin (arctan (x - 2))

π sec (3 x + \frac{π}{2}) - 1

tan (arctan (\frac{x}{2}))

sin (\frac{1}{4} π + x)