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What is a mathematical statement that equates one quantity with another called?
AAn identity
BAn estimate
CAn interval
DAn operator
Answer & Solution
Correct answer: A. An identity
1. An identity is a mathematical statement that equates one quantity with another.
2. Trigonometric identities let an expression be rewritten with sine and cosine ratios only.
3. That rewriting is what makes it possible to prove further identities and solve equations.
_Source: Siyavula Mathematics Grade 11 (Everything Maths, CC BY 4.0), Chapter 6: Trigonometry_
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