📏 trigonometry

1. Find $\tan\left(-\frac{2\pi}{3}\right)$. Recall that $\tan(\theta) = \frac{\sin \theta}{\cos \theta}$.

1. **Find \( \tan\left(-\frac{2\pi}{3}\right) \)** Step 1. Recognize the angle \( -\frac{2\pi}{3} \) is negative. Add \( 2\pi \) to find a positive coterminal angle:

1. The problem is to find the exact value of $\cot\left(-\frac{5\pi}{12}\right)$. 2. Recall that $\cot \theta = \frac{\cos \theta}{\sin \theta}$ and that cotangent is an odd functi

1. We'll start with a common Grade 10 trigonometry problem: Find the value of angle $\theta$ given $\sin \theta = 0.6$. 2. To find $\theta$, we use the inverse sine function: $$\th

1. Find the exact value of $\sin 45^\circ$. 2. Solve for $x$ if $\cos x = \frac{1}{2}$ and $0^\circ \leq x < 360^\circ$.

1. Stating the problem: Prove the trigonometric identities:

1. State the problem: Simplify the expression $$\frac{\cos(\theta)}{1 - \sin(\theta)} - \tan(\theta)$$. 2. Recall that $$\tan(\theta) = \frac{\sin(\theta)}{\cos(\theta)}$$.