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grade 12 · PRE-004

Use a trigonometric identity

Use sine squared plus cosine squared equals one and select the sign from the quadrant.

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Try with a hintFresh problem · seed 1519845235

If \(\sin\theta=3/5\) and \(\theta\) is in quadrant I, what is \(\cos\theta\)?

Quadrant I

Give me one hint

Use \(\sin^2\theta+\cos^2\theta=1\).

Choose an answer\(\frac{3}{5}\)\(\frac{5}{4}\)\(\frac{4}{5}\)\(\frac{-4}{5}\)

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Math Lab is a working name for Ready Rung's separate math-learning product. Guided success and independent evidence are reported separately.