22-05-2019
Mathematics

contestada

If cos x = sin(20 + x)° and 0° < x < 90°, the value of x is
°.

Respuesta :

Danutz98 Danutz98

22-05-2019

cos x = sin(20 + x)

sin(90-x) = sin(20+x)

=> 90-x = 20+x => 2x = 70 => x = 35

We need only x ∈ (0,90) so this is the only answer.

Answer Link

Otras preguntas

How can we fix global warming? At least 5 sentences No spams please

who may perform a post-exposure medical evaluation?

What are the domain and range of f(x) = (one-sixth) Superscript x + 2? domain: Left-brace x vertical-line x greater-than negative one-sixth right-brace; range:

Which of the following statements about trash in the United States is FALSE? Each person produces about 2 kg of trash per day. There is nothing we can do to red

Kendra saw a calculator on sale for $68.25. The original price of the calculator was $89.99. What is the approximate discount on the calculator? 20% o 25% 30% 3

Please help me with this!

evaluate (8+t)^3when t=2

6j–11j–11j+19=–13 plz help me

What is always found in a living room in the Spanish-speaking world, but not always found in a living room in the United States?

Scrooge invests $500. He found a bank that would pay him 4% interest, compounded monthly. a) Type of exponential function. b) Write a function to represent the