Math Problem Statement
Vinkeln α , mätt i radianer, uppfyller olikheterna π/2≤α≤π .
Beräkna sinα , om man vet att cosα=−7/10 .
Solution
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Math Problem Analysis
Mathematical Concepts
Trigonometry
Trigonometric identities
Formulas
Pythagorean identity
Theorems
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Suitable Grade Level
High school
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