1)Найдите значение выражения: 8cos60° * sin²45° + 3tg²135° - tg38°*cos38°/sin 38°. Created by oirinka2014. geometriya-ru

sin 38°...

oirinka2014 @oirinka2014

August 2021 1 33 Report

1)Найдите значение выражения:
8cos60° * sin²45° + 3tg²135° - tg38°*cos38°/sin 38°

Answers & Comments

xERISx

Verified answer

8cos60° * sin²45° + 3tg²135° - tg38°*cos38°/sin 38°=
$= 8* \frac{1}{2} *( \frac{ \sqrt{2} }{2} )^2+3(-1)^2- \frac{sin38^o}{cos38^o} * \frac{cos38^o}{sin38^o} = \\ \\ =2 +3-1=4$

2 votes Thanks 1

reshite uravnenie x2160

Answer

oirinka2014 August 2022 | 0 Ответы

3 reshite uravnenieee112173b3da4caf275b68493489af73 28836

Answer

oirinka2014 August 2022 | 0 Ответы

v geometricheskoj progressii summa pervogo i vtorogo chlenov ravna 15 a vtorogo i474498b0316e14372d549a80bd5d7b22 46814

Answer

oirinka2014 August 2022 | 0 Ответы

Answers & Comments

Verified answer

reshite uravnenie x2160

3 reshite uravnenieee112173b3da4caf275b68493489af73 28836

v geometricheskoj progressii summa pervogo i vtorogo chlenov ravna 15 a vtorogo i474498b0316e14372d549a80bd5d7b22 46814

7^2=...

x+2...

4^19=...

(-5)^12=...

reshite uravnenie 3x 84xfef65b8cce7f7a51de6bdf9d03451cb0 59694

reshite neravenstva 6x 3023gt2x

6:x=-31...

рекомендуемые вопросы

Helpful Links

Helpful Social