Practice problem
Simplify the expression 2cos2(37∘)−1\\2\cos^2(37^{\circ})-12cos2(37∘)−1
sin(74∘)\sin(74^{\circ})sin(74∘)
cos(74∘)\cos(74^{\circ})cos(74∘)
tan(74∘)\tan(74^{\circ})tan(74∘)
cos(37∘)\cos(37^{\circ})cos(37∘)
Type a concept, like “slope” or “photosynthesis”.