6. sin150 Sin(90+60)=+cos60∘=+1/2 sin(180−30)=+sin30∘+1/2
7cos120∘cos(90+30)=−sin30∘=+1/2cos(180∘−60)=−cos60∘=−1/2
cos(90+60)=−sin60∘=−8/2cos(180∘−30)=−cos30=−3/2
cos150
Video solution 1: 6. sin150 Sin(90+60)=+cos60∘=+1/2 sin(180−30)=+sin30∘+1/2
7cos120∘cos(90+30)=−sin30∘=+1/2cos(180∘−60)=−cos60∘=−1/2
cos(90+60)=−sin60∘=−8/2cos(180∘−30)=−cos30=−3/2
cos150
Video solution 2: 6. sin150 Sin(90+60)=+cos60∘=+1/2 sin(180−30)=+sin30∘+1/2
7cos120∘cos(90+30)=−sin30∘=+1/2cos(180∘−60)=−cos60∘=−1/2
cos(90+60)=−sin60∘=−8/2cos(180∘−30)=−cos30=−3/2
cos150
Sin 30 Degrees (Value and Derivation)
True or False: sin 45 degrees = cos 45 degrees = sqrt2 / 2
Why sin30=cos60=1/2, sin60=cos30=square root 3 over 2, tan30=1/square root 3, tan60=square root 3 ?
Solved Qi Given z =6(cos 150° + i sin 150°),2, = 4(cos 60° +
Solutions to Practice Problems (Trig without Tears)
2. sin 60∘ cos 30∘ + cos 60∘ sin 30∘ - Noon Academy
The_trigonometry_functions
Solved] 8. (07.01 MC) If the sin 30' = , then which statement is true? (6
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Unit Circle: Sine and Cosine Functions
Unit Circle: Sine and Cosine Functions