A day full of math games & activities. Find one near you.
A day full of math games & activities. Find one near you.
A day full of math games & activities. Find one near you.
A day full of math games & activities. Find one near you.
If sin θ = √3 / 2 and tan θ < 0, what is the value of cos θ?
We will use the concepts of trigonometry to find the value of cos θ.
Answer: If sin θ = √3 / 2 and tan θ < 0, the value of cos θ = -1 / 2.
Let us see how we will use the concept of trigonometry to find the value of cos θ.
Explanation:
It is given that sin θ = √3 / 2 and tan θ < 0.
Hence, we are talking about 2nd quadrant that is π / 2 < θ < π.
In the second quadrant, if sin θ = √3 / 2 then θ = 2π / 3 .
Therefore, cos (2π / 3) = - sin(π / 6) = -1 / 2 (Because cos is negative in 2nd quadrant)
Therefore, cos θ = -1 / 2.
Math worksheets and
visual curriculum
visual curriculum