fhdjjskksj fhdjjskksj

03-08-2020
Mathematics

contestada

Find X.
Round to the nearest tenth.

Law of Cosines : c2 = 22 + b2 - 2ab cos C

Find X Round to the nearest tenth Law of Cosines c2 22 b2 2ab cos C class=

Respuesta :

valerieulbrich valerieulbrich

03-08-2020

Answer:

70.5°

Step-by-step explanation:

22² = (20)²+(18)² - 2(20)(18) cos X

484 = 400 + 324 - 720 cos X

-240 = -720 cosx

1/3 = cos X

[tex]cos^{-1}(\frac{1}{3})[/tex] = X

X = 70.52877937

Answer Link

Otras preguntas

How do you think france’s population contributed to the revolution? (French Revolution Causes)

When you use a comma to join two independent clauses that can stand alone as sentences, you have created a(n) _________.

Intelligence scores are most likely to be stable over a one-year period for A) A preschool student whose intelligence test score is 80. B) First-grade student

According to the job characteristics theory, which core characteristic refers to the amount of freedom, independence, and discretion the employee enjoys in dete

what volume of 0.0105-M HBr solution is be required to titrate 125 mL of a 0.0100-M Ca(OH)2 solution? Ca(OH)2 + 2HBr ? CaBr2 + 2H2O

Evaluate the expression: 20C4

What is -9 x (5 - 2x) I need an Urgent answer!! Thank you

Write the following sentence using mathematical symbols the quotient of N and 7 is 10 times n

What emerging technologies will make chemical energy safer, more usable, more efficient, and cleaner?

What is the Full Form of PET?