Learn how to solve problems step by step online. tan(20)/tan(70). Anwendung der trigonometrischen Identität: \tan\left(\theta \right)=\frac{\sin\left(\theta \right)}{\cos\left(\theta \right)}, wobei x=70. Wenden Sie die Formel an: \frac{\frac{a}{b}}{\frac{c}{f}}=\frac{af}{bc}, wobei a=\sin\left(20\right), b=\cos\left(20\right), a/b/c/f=\frac{\frac{\sin\left(20\right)}{\cos\left(20\right)}}{\frac{\sin\left(70\right)}{\cos\left(70\right)}}, c=\sin\left(70\right), a/b=\frac{\sin\left(20\right)}{\cos\left(20\right)}, f=\cos\left(70\right) und c/f=\frac{\sin\left(70\right)}{\cos\left(70\right)}. Anwendung der trigonometrischen Identität: \sin\left(x\right)\cos\left(y\right)=\frac{\sin\left(x+y\right)+\sin\left(x-y\right)}{2}, wobei x=70 und y=20. .

tan(20)/tan(70)