Mathematics
Grade 7
15 min
Probability of one event
Probability of one event
What you'll learn
- Identify the six trigonometric ratios (sine, cosine, tangent, cosecant, secant, and cotangent) for a given acute angle in a right triangle, expressing each ratio as a fraction of side lengths with 100% accuracy.
- Apply trigonometric ratios to solve for unknown side lengths of right triangles in contextual problems, achieving correct solutions in at least 80% of the assigned problems.
- Solve for unknown angles in right triangles using inverse trigonometric functions, expressing solutions in both degrees and radians to the nearest tenth, with at least 75% accuracy.
- Explain the relationship between the trigonometric ratios of complementary angles within a right triangle, justifying the relationship using geometric reasoning and trigonometric identities in a written explanation.
Tutorial Preview
1
A bag has 3 blue marbles 🔵 and 2 red marbles 🔴. What is the probability of picking a blue one?
2
What is the probability of rolling a number greater than 4 on a 6-sided die?
3
A spinner has 5 equal sections: 2 are green, 3 are yellow. What is the probability of landing on green, as a percent?
Sample Practice Questions
Easy
A bag has 2 red balls and 3 blue balls. What is the probability of picking a red ball?
0.1/5
1.2/5
2.3/5
3.2/3
Easy
There are 4 apples and 1 orange in a basket. What is the probability of picking an orange?
0.1/5
1.1/4
2.4/5
3.1/1
Easy
What is the probability of rolling a 5 on a standard 6-sided die?
0.1/6
1.5/6
2.1/5
3.1/2
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Frequently asked questions
What grade level is "Probability of one event"?
Probability of one event is a Grade 7 Mathematics lesson on ExcelOS.
What will I learn in Probability of one event?
You'll be able to: Identify the six trigonometric ratios (sine, cosine, tangent, cosecant, secant, and cotangent) for a given acute angle in a right triangle, expressing each ratio as a fraction of side lengths with 100% accuracy; Apply….
Is "Probability of one event" free to practice?
Yes. You can read the tutorial preview for free, and signing up for a free ExcelOS account unlocks the full tutorial and all practice questions with instant feedback.
How many practice questions are included with Probability of one event?
This lesson includes 25 practice questions across multiple difficulty levels, each with instant feedback and explanations.