query: Help me understand trig.
positive_passages.docid: 143584
positive_passages.text: Trigonometric ratios for angles greater than $90^\circ$?
negative_passages.docid: 33396
negative_passages.text: Generalizing a Trig Identity
negative_passages.docid: 120569
negative_passages.text: Trigonometric Functions And Identities Question .
negative_passages.docid: 29370
negative_passages.text: Trig integral $\int ( \cos{x} + \sin{x}\cos{x}) \, dx $
negative_passages.docid: 27132
negative_passages.text: Can't figure out how $\sin\left(\tan^{-1}(x)\right)=\frac{x}{\sqrt {x^2+1}}$
negative_passages.docid: 100777
negative_passages.text: Finding the derivatives of sin(x) and cos(x)
negative_passages.docid: 10289
negative_passages.text: Need help in proving that $\frac{\sin\theta - \cos\theta + 1}{\sin\theta + \cos\theta - 1} = \frac 1{\sec\theta - \tan\theta}$
negative_passages.docid: 87620
negative_passages.text: Different definitions of trigonometric functions
negative_passages.docid: 105774
negative_passages.text: How is $ \cos (\alpha / \beta) $ expressed in terms of $\cos \alpha $ and $ \cos \beta $?
negative_passages.docid: 1460
negative_passages.text: How to understand degrees of freedom?
negative_passages.docid: 23397
negative_passages.text: Why it's true? $\arcsin(x) +\arccos(x) = \frac{\pi}{2}$
negative_passages.docid: 33100
negative_passages.text: Trigonomnetric equality involving tg
negative_passages.docid: 39862
negative_passages.text: Why does the derivative of sine only work for radians?
negative_passages.docid: 135543
negative_passages.text: Proof of Angles going beyond 90 degrees in Trigonometry
negative_passages.docid: 155148
negative_passages.text: Why is $\sin 30^\circ=\frac{1}{2}$
negative_passages.docid: 120797
negative_passages.text: Trigonometry question finding the sin and tan
negative_passages.docid: 7134
negative_passages.text: Confusion related to calculation of pi