Isaac is looking through binoculars on a whale watching trip when he notices a sea otter in the distance. If he is 20 feet above
sea level in the boat, and the angle of depression is 30 degrees, how far away from the boat is the otter (to the nearest foot)?
2 answers:
Answer:
<h2>The otter is 34 feet from the boat, approximately.</h2>Step-by-step explanation:
The angle of depression is the angle formed by the horizontal and the line of sight. The image attached shows an example.
Now, as you can observe, the situation can be modeled by a right triangle, where we need to use trigonometric reasons to find the answer, the horizontal distance.
Therefore, the otter is 34 feet from the boat, approximately.
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Answer:
Total percent of the room did she paint green = 60%
Step-by-step explanation:
Given - Cheryl painted her living room walls with two different colors. She painted part of the room yellow and another part green. If the surface area of the walls in her room is 720 ft² and she painted 288 ft² yellow.
To find - What percent of the room did she paint green ?
Proof -
Given that,
The surface area of the walls in her room = 720 ft²
Total area painted in yellow color = 288 ft²
So,
Total area painted in green color would be = 720 - 288 = 432 ft²
Now,
Let the total percent green color painted = x
So,
720 × x% = 432
⇒
⇒ x = = 60
∴ we get
Total percent of the room did she paint green = 60%