Asked by Dorian
If sinθ=5/13,determine each of the following without the use of a calculator
(Hint use a sketch)(θ<90°)
1.4.1 cos θ
1.4.2 tanθ
(Hint use a sketch)(θ<90°)
1.4.1 cos θ
1.4.2 tanθ
Answers
Answered by
mathhelper
sinθ=5/13 = y/r
so sketch a right-angled triangle with hypotenuse 13, opposite side (the y)
equal to 5.
x^2 + y^2 = r^2
x^2 + 25 = 169
x^2 = 144
x = 12 , everything is positive since we are in quadrant I
cosθ = 12/13
tanθ = 5/12
perhaps you recognized the common 5-12-13 right-angled triangle.
so sketch a right-angled triangle with hypotenuse 13, opposite side (the y)
equal to 5.
x^2 + y^2 = r^2
x^2 + 25 = 169
x^2 = 144
x = 12 , everything is positive since we are in quadrant I
cosθ = 12/13
tanθ = 5/12
perhaps you recognized the common 5-12-13 right-angled triangle.
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.