Simplify, WITHOUT using a calculator: sin 15°·cos 45° + cos 15°·sin 45°
Evaluate, WITHOUT using a calculator: 2 sin 15°·cos 15°
Simplify, WITHOUT using a calculator: sin 13°·cos 17° + cos 13°·sin 17°
Simplify, WITHOUT using a calculator: cos 65°·cos 25° − sin 65°·sin 25°
Simplify, WITHOUT using a calculator: cos 44°·cos 46° − sin 44°·sin 46°
Evaluate, WITHOUT using a calculator: cos 15°
Evaluate, WITHOUT using a calculator: tan 15°
Simplify, WITHOUT using a calculator: sin 27°·cos 33° + cos 27°·sin 33°
Simplify, WITHOUT using a calculator: sin 12°·cos 18° + cos 12°·sin 18°
Simplify, WITHOUT using a calculator: cos 18°·cos 42° − sin 18°·sin 42°
Simplify, WITHOUT using a calculator: cos 73°·cos 47° − sin 73°·sin 47°
Evaluate, WITHOUT using a calculator: sin 105°