A.) Sin 30° + Sin 45° + Sin 60°

Trigonometri

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Bagian A

= sin 30° + sin 45° + sin 60°

= 1/2 + 1/2 √2 + 1/2 √3

= 1/2 (1 + √2 + √3)

Bagian B

= cos 30° + cos 45° + cos 60°

= 1/2 √3 + 1/2 √2 + 1/2

= 1/2 (1 + √2 + √3)

Bagian C

= tan 30° + tan 45° + tan 60°

= 1/3 √3 + 1 + √3

= 4/3 √3 + 1

Bagian D

= sin 30° + cos 90° + tan 45°

= 1/2 + 0 + 1

= 3/2

Bagian E

= sin 60° + cos 30° + cot 45°

= 1/2 √3 + 1/2 √3 + 1/tan 45°

= √3 + 1