#ClosingSZN : The Young Closer's Sales Domination & Office Escape Manual for the Digital Era

#ClosingSZN : The Young Closer's Sales Domination & Office Escape Manual for the Digital Era

Matematika a. Sin 30° + cos 60° - tan 45° + 2. Cos 45°
b. Cos 330° + sin 480°

a. Sin 30° + cos 60° - tan 45° + 2. Cos 45°
b. Cos 330° + sin 480°

Jawab:

a. √2

b. √3

Penjelasan dengan langkah-langkah:

a. sin 30° + cos 60° - tan 45° + 2 cos 45°

= 1/2 + 1/2 - 1 + 2(1/2 √2)

= √2

b. cos 330° + sin 480°

= cos (360° - 30°) + sin (120° + 1 . 360°)

= cos 30° + sin 120°

= 1/2 √3 + sin (90° + 30°)

= 1/2 √3 + cos 30°

= 1/2 √3 + 1/2 √3

= √3

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