Podcast
Questions and Answers
Which of the following is a cofunction identity?
Which of the following is a cofunction identity?
- $\tan(x) = \frac{\sin(x)}{\cos(x)}$
- $\sin(\frac{\pi}{2} - x) = \cos(x)$ (correct)
- $\sin^2(x) + \cos^2(x) = 1$
- $\sin(2x) = 2\sin(x)\cos(x)$
Which trigonometric identity can be used to simplify the expression $\sin^4(x)\cos^2(x)$?
Which trigonometric identity can be used to simplify the expression $\sin^4(x)\cos^2(x)$?
- Half angle formula
- Cofunction identity
- Double angle formula
- Power reducing formula (correct)
Which of the following equations can be solved using cofunction identities?
Which of the following equations can be solved using cofunction identities?
- $\sin(2x) = 2\sin(x)\cos(x)$
- $\sin^2(x) + \cos^2(x) = 1$
- $\cos(2\theta + 16^\circ) = \sin(\theta + 11^\circ)$
- $\cot(\theta) = \tan(\theta + \frac{\pi}{6})$ (correct)
Which trigonometric identity can be used to determine the cofunction of a given function value?
Which trigonometric identity can be used to determine the cofunction of a given function value?
Which of the following is a power reducing formula?
Which of the following is a power reducing formula?
Which star in the Alpha Centauri system is slightly more massive than the sun and about 1.5 times brighter?
Which star in the Alpha Centauri system is slightly more massive than the sun and about 1.5 times brighter?
Which star in the Alpha Centauri system is too faint to be visible to the unaided eye?
Which star in the Alpha Centauri system is too faint to be visible to the unaided eye?
What is the closest-known star to our solar system?
What is the closest-known star to our solar system?
How many light-years away is the Alpha Centauri star system from us?
How many light-years away is the Alpha Centauri star system from us?
What can be seen when observing Alpha Centauri through a small telescope?
What can be seen when observing Alpha Centauri through a small telescope?
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