Evaluate, WITHOUT using a calculator: cos230∘+^{2}30^\circ+230∘+ sin 30°
Evaluate, WITHOUT using a calculator: 1 − 2 sin230∘^{2}30^\circ230∘
Evaluate, WITHOUT using a calculator: cos 60∘×60^\circ{}\times60∘× tan 45∘×45^\circ{}\times45∘× sin 90°
Evaluate, WITHOUT using a calculator: tan 60∘÷60^\circ{}\div60∘÷ tan 30°
Evaluate, WITHOUT using a calculator: sin245∘+^{2}45^\circ+245∘+ cos245∘^{2}45^\circ245∘
Evaluate, WITHOUT using a calculator: sin 60∘×60^\circ{}\times60∘× tan 30°
Evaluate, WITHOUT using a calculator: sin260∘+^{2}60^\circ+260∘+ cos260∘^{2}60^\circ260∘
Evaluate, WITHOUT using a calculator: sin 30° + cos 60°
Evaluate, WITHOUT using a calculator: sin 60∘÷60^\circ{}\div60∘÷ cos 60°
Evaluate, WITHOUT using a calculator: cos 30° − sin 60°
Evaluate, WITHOUT using a calculator: 4 sin 30∘×30^\circ{}\times30∘× cos 60°
Evaluate, WITHOUT using a calculator: sin 45∘×45^\circ{}\times45∘× cos 45° + sin 30°
