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bonufazy [111]
3 years ago
6

Please help me idk this

Mathematics
2 answers:
RoseWind [281]3 years ago
8 0

Answer:

90 -54

Step-by-step explanation:

Since complementary means "angles that add up to 90 degrees" and DEF has a smaller angle than ABC, its the sum of 90-54

Vilka [71]3 years ago
5 0

Answer:

39 degrees (I think)

Step-by-step explanation:

Can you tell me if right and can you give me brainliest?????

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Answer:

t =12 m

Step-by-step explanation:

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Put the smaller triangle on top and the larger triangle on bottom

12         9

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Step-by-step explanation:

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Given that sin theta = 1/4, 0→theta→π/2, what<br>. what is the exact value of cos 8?​
natali 33 [55]
<h3>Answer: Choice B \frac{\sqrt{15}}{4}</h3>

===========================================================

Work Shown:

Angle theta is between 0 and pi/2, so this angle is in quadrant Q1.

Square both sides of the given equation

\sin \theta = \frac{1}{4}\\\\\sin^2 \theta = \left(\frac{1}{4}\right)^2\\\\\sin^2 \theta = \frac{1}{16}

Then use the pythagorean trig identity to get

\sin^2 \theta + \cos^2 \theta = 1\\\\\cos^2 \theta = 1-\sin^2 \theta\\\\\cos \theta = \sqrt{1-\sin^2 \theta} \ \ \ \text{cosine is positive in Q1}\\\\\cos \theta = \sqrt{1-\frac{1}{16}}\\\\\cos \theta = \sqrt{\frac{16}{16}-\frac{1}{16}}\\\\\cos \theta = \sqrt{\frac{16-1}{16}}\\\\\cos \theta = \sqrt{\frac{15}{16}}\\\\\cos \theta = \frac{\sqrt{15}}{\sqrt{16}}\\\\\cos \theta = \frac{\sqrt{15}}{4}\\\\

3 0
3 years ago
I don’t get this plsss someone help
katovenus [111]

Answer:

Step-by-step explanation:

used quizlet

3 0
3 years ago
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