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• Trigonometry
• Tests in trigonometry of the right triangle
• Sine, cosine and tangent ratio

# Sine, cosine and tangent ratio

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•  Question 1: 1 pts The side that is opposite of $\angle$ RPQ is:
 RP RQ PQ
•  Question 2: 1 pts The side that is adjacent to $\angle$ UWV is:
 UW WV UV
•  Question 3: 1 pts Which of the following is not correct?
 $\sin\alpha = \frac{a}{c}$ $\cos\alpha = \frac{b}{c}$ $\tan\alpha = \frac{b}{a}$
•  Question 4: 1 pts Which of the following is correct?
 $\sin\beta = \frac{a}{c}$ $\cos\beta = \frac{b}{c}$ $\tan\beta = \frac{b}{a}$
•  Question 5: 1 pts Is the following statement true or false? $\sin\alpha = \frac35$
•  Question 6: 1 pts Is the following statement true or false? $\tan\alpha = \frac{12}5$
•  Question 7: 2 pts Is the following statement true or false? $\sin\beta = \frac35$
•  Question 8: 2 pts Is the following statement true or false? $\cos\beta = \frac5{13}$
•  Question 9: 3 pts In $\triangle{ABC}$, $\angle{C}$ is a right angle, $AC=6$, $BC=8$ find $\sin{A}$.
 $\sin{A} = 0.6$ $\sin{A} = 0.8$ $\sin{A} = 0.75$
•  Question 10: 3 pts In $\triangle{PQR}$, $\angle{R}$ is a right angle, $PR=8$, $PQ=17$. Find $\cos{Q}$.
 $\cos{Q} = \frac{15}{17}$ $\cos{Q} = \frac8{17}$ $\cos{Q} = \frac{17}8$ $\cos{Q} = \frac{17}{15}$