Add sin(20)cos(80)+cos(20)sin(80)

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Trigonometry

$\sin (20) \cos (80) + \cos (20) \sin (80)$

Simplify each term.

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Evaluate $\sin (20)$ .

$0.34202014 \cos (80) + \cos (20) \sin (80)$

Evaluate $\cos (80)$ .

$0.34202014 \cdot 0.17364817 + \cos (20) \sin (80)$

Multiply $0.34202014$ by $0.17364817$ .

$0.05939117 + \cos (20) \sin (80)$

Evaluate $\cos (20)$ .

$0.05939117 + 0.93969262 \sin (80)$

Evaluate $\sin (80)$ .

$0.05939117 + 0.93969262 \cdot 0.98480775$

Multiply $0.93969262$ by $0.98480775$ .

$0.05939117 + 0.92541657$

Add $0.05939117$ and $0.92541657$ .

$0.98480775$

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