sin 30° + cos 60° + tan 30°/sec 60° cotan 30°
Tentukan nilai dari:
sin 30° + cos 60° + tan 30°/sec 60° cotan 30°
Jawab:
sin 30° + cos 60° + tan 30°/sec 60° cotan 30°
= (sin 30° + cos 60° + tan 30°) cos 60° tan 30°
= ( ½ + ½ + √3/3) ½ . √3/3
= (1 + √3/3) √3/6
= √3/6 + 1/6
= 1/6 (√3 + 1)
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