คำศัพท์ตรีโกณมิติและฟังก์ชัน

√2/2

<p>True</p> Signup and view all the answers

<p>2π</p> Signup and view all the answers

<p>2π</p> Signup and view all the answers

<p>π</p> Signup and view all the answers

<p>False</p> Signup and view all the answers

<p>True</p> Signup and view all the answers

<p>แทนเจนต์</p> Signup and view all the answers

<p>False</p> Signup and view all the answers

<p>False</p> Signup and view all the answers

<p>True</p> Signup and view all the answers

<p>True</p> Signup and view all the answers

<p>False</p> Signup and view all the answers

<p>True</p> Signup and view all the answers

<p>sin(θ) = cos(90°-θ) cos(θ) = sin(90°-θ) tan(θ) = cot(90°-θ) cot(θ) = tan(90°-θ) sec(θ) = csc(90°-θ) csc(θ) = sec(90°-θ)</p> Signup and view all the answers

<p>sin(2θ) = 2sin(θ)cos(θ)</p> Signup and view all the answers

<p>cos(2θ) = cos²(θ) - sin²(θ)</p> Signup and view all the answers

<p>tan(2θ) = 2tan(θ) / (1-tan²(θ))</p> Signup and view all the answers

<p>sin(θ/2) = ±√(1-cos(θ))/2</p> Signup and view all the answers

<p>cos(θ/2) = ±√(1+cos(θ))/2</p> Signup and view all the answers

<p>tan(θ/2) = ±√(1-cos(θ))/(1+cos(θ))</p> Signup and view all the answers

<p>True</p> Signup and view all the answers

<p>True</p> Signup and view all the answers