Q:

What are the values of cos α and tan α, if: sinα= 40/41

Accepted Solution

A:
Answer:The answer to your question is:cos α = 9/ 41tan α = 40/9Step-by-step explanation:Datacos α = ?tan α = ?sin α = 40/41Processsin Ф  = opposite side / hypotenusethen, if sin α = 40/41,opposite side = 40hypotenuse = 41Pythagorean theorem                                        c² = a² + b²                                       41² = 40² + b²                                       b² = 41² - 40²                                       b² = 1681 - 1600                                       b² = 81                                       b = 9adjacent side = 9Now,cosine Ф = adjacent side / hypotenusecos α = 9/ 41tangent Ф = opposite side / adjacent sidetan α = 40/9