Practice problem
If xxx is a real number for which cos(2x)=710,\cos(2x) = \frac{7}{10},cos(2x)=107, find the value of sin2(x).\sin^2(x).sin2(x).
310\frac{3}{10}103
320\frac{3}{20}203
710\frac{7}{10}107
720\frac{7}{20}207
Type a concept, like “slope” or “photosynthesis”.
