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`x`²	`x`^□	log_□	√☐	^□√☐	≤	≥	□□	·	÷	`x`^◦	π
(☐)^′	`ddx`	∂∂`x`	∫	∫_□^□	lim	∑	∞	`θ`	(`f` ◦ `g`)	`f`(`x`)

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Log Expand Calculator

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`x`²	`x`^□	log_□	√☐	^□√☐	≤	≥	□□	·	÷	`x`^◦	π
(☐)^′	`ddx`	∂∂`x`	∫	∫_□^□	lim	∑	∞	`θ`	(`f` ◦ `g`)	`f`(`x`)

☐²

x^☐

√☐

^□√☐

□□

log_□

π

θ

∞

∫

ddx

≥	≤	·	÷	`x`^◦	(☐)	\|☐\|	(`f` ◦ `g`)	`f`(`x`)	ln	`e`^☐
(☐)^′	∂∂`x`	∫_□^□	lim	∑	sin	cos	tan	cot	csc	sec

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cos(240^◦)

Solution

−12

Decimal

−0.5

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cos(240^◦)

三角関数の公式を使用して書き換える: cos(180^◦)cos(60^◦)−sin(180^◦)sin(60^◦)

=cos(180^◦)cos(60^◦)−sin(180^◦)sin(60^◦)

次の自明恒等式を使用する: cos(180^◦)=(−1)

次の自明恒等式を使用する: cos(60^◦)=12

次の自明恒等式を使用する: sin(180^◦)=0

次の自明恒等式を使用する: sin(60^◦)=√32

=(−1)12 −0· √32

簡素化

=−12

Log Expand Examples

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こんにちは, について質問する cos(240^◦) または以下のオプションから選択してください

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