Simplify: sin(−x)
Simplify: sin(360° − x)
Simplify: sin(180° − x) · cos(180° + x)
Simplify: sin(90∘+x)÷(90^\circ+x)\div(90∘+x)÷ cos(180° − x)
Simplify: sin(180° − x)
Simplify: sin(180∘+x)÷(180^\circ+x)\div(180∘+x)÷ sin(180° − x)
Simplify: cos(180° + x) + sin(90° + x)
Simplify: sin(90° − x)
Simplify: sin(360° + x) + sin(180° + x)
Simplify: cos(−x)
Simplify: cos(180° + x)
Simplify: cos(180° − x) + cos x