Trigonometri (Indah Puspita Sari: Bimtek SPADA)

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Mathematics

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KG - 1st Grade

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Hard

indah sari

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3 Slides • 5 Questions

Aturan Sinus, Kosinus dan Luas Segitiga

(Indah: Bimtek SPADA)

by indah sari

Rumus Trigonometri untuk Sudut Rangkap

Rumus untuk sin 2α

sin 2α = sin (α + α)

= sin α cos α + cos α sin α

= 2 sin α cos α

Rumus untuk cos 2α

cos 2α = cos (α + α)

= cos α cos α + sin α sin α

= cos2α – sin2α

Multiple Choice

Jika sin x = $\frac{4}{5}$ dan x adalah sudut lancip, maka sin 2x = ....

$\frac{2}{5}$

$\frac{3}{5}$

$\frac{12}{25}$

$\frac{24}{25}$

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Multiple Choice

Jika sin x = $\frac{1}{2}$ maka cos 2x = ...

$\frac{1}{2}$

$-\frac{1}{2}$

-2

Multiple Choice

Jika tan x = $\frac{3}{4}$ dan x adalah sudut lancip, maka sin 2x = ....

$\frac{24}{5}$

$\frac{24}{25}$

$\frac{32}{25}$

$\frac{43}{25}$

Fill in the Blanks

Nilai dari $1-2\sin^2\ 75$ adalah

Type answer...

Aturan Sinus, Kosinus dan Luas Segitiga

(Indah: Bimtek SPADA)

by indah sari

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