Question

Trigonometri analitik. Berapa nilai dari
[tex]\displaystyle \sqrt{3}\csc 20^\circ-\sec 20^\circ[/tex]

Answer 1

Verified answer

JAWABAN

[tex] \boxed{ \displaystyle \sf\sqrt{3}\csc \: 20 \degree-\sec 20 \degree \: = \: 4}[/tex]

PEMBAHASAN

sin (a - b) = sin a cos b - cos a sin b

2 sin a cos a = sin 2a

csc a = 1/sin a

sec a = 1/cos a

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