Болела.Пропустила эту тему.Она называется "Преобразование суммы тригонометрическ...

wejde @wejde

August 2022 1 75 Report

Болела.Пропустила эту тему.Она называется "Преобразование суммы тригонометрических функций в произведение"

Объясните как делать, пожалуйста.

Answers & Comments

sergio8800

$cosx+cosy=2cos\frac{x+y}{2}cos\frac{x-y}{2}$

$cos(2x+\frac{\pi}{3})+cos(2x-\frac{\pi}{3})>-\frac{1}{2}$

$2cos\frac{2x+\frac{\pi}{3}+2x-\frac{\pi}{3}}{2}cos\frac{2x+\frac{\pi}{3}-2x+\frac{\pi}{3}}{2}>-\frac{1}{2}$

$cos2xcos\frac{\pi}{3}>-\frac{1}{4}$

$\frac{1}{2}cos2x>-\frac{1}{4}$

$cos2x>-\frac{1}{2}$

$-\frac{2\pi}{3}+2\pi k$

$-\frac{\pi}{3}+\pi k$

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voprosy vo vlozhenii6c6494c36ceaf1acb394b6b53fadc62d 78262

kakie problemy vydvigayut avtory v proizvedeniyah 1 gore ot uma 2 prestupleniee4632e497ba0859a1f76f7c09549ffa9 95171

kakie problemy vydvigayut avtory v proizvedeniyah 1 gore ot uma 2 prestuplenie

Find expressions in paragraph 1 with the number of words shown in brackets that ...

voprosy vo vlozheniie734a18e505b83ed524f7c0697bfcfff 95014

read each sentence give possible results use cant or couldnt in your answers

Rewrite the following sentences with might instead of will perhaps. 1. Perhaps w...

match synonyms vo vlozhenii

voprosy vo vlozheniie2d5eed50fef8486fce2d4b1846d613a 9493

kto pokupaet lishnee v konce koncov prodaet neobhodimoe esse po etoj fraze9193d4377113c5874496755728247690 5638

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