doducbang01012005 doducbang01012005

25-07-2021
Mathematics

contestada

Cho Hình chóp S.ABC Có đáy là tam giac đều cạch a. SA vuông góc với đáy, SA=a . Tính góc giữa SB và mặt phẳng đáy

Respuesta :

NnDoKmNn NnDoKmNn

25-07-2021

Answer:

45 độ

Step-by-step explanation:

SA vuông góc (ABC) => góc SAB = 90 độ; góc giữa SB và mặt phẳng đáy = góc SBA

SA=AB=a => SAB là tam giác cân

KL: góc giữa SB và mặt phẳng đáy SBA = 45 độ

Answer Link

Otras preguntas

Tú A) ________, Sra. Caballero, necesita unas tijeras y el papel. Él B) ________ necesita el uniforme y las botas en la escuela. Usted C) ________ necesitas la

Karen stacks a set of cans as shown. The top can has a diameter of 2 inches, the middle can has a diameter of 5 inches, and the bottom can has a diameter of 6 i

Read this excerpt from king arthur's socks: a comedy in one act. Guenevere: (unable to bear it) please, mary, please! what does the stage direction reveal about

Between what two elements does hydrogen bonding occur?

Which dialogue is punctuated correctly? A. The principal said "I am proud of how the students did in the musical"! B. "Me too!" the music teacher replied, "They

Need to write an e-mail to a friend on the topic "my trip to Spain" in Spanish of course (╥﹏╥)

Can you help me w this

you spend time wisely for blank

What is the interface of an app? a storyboard software the part the user sees a sketch of your idea a testing environment

Why do you need to exhibit good behavior?