What is the exact value of ?
Answer and explanation
Correct answer: B.
- Step 1: Use the special right triangles: the -- triangle (sides ) and the triangle (sides ).
- Step 2: .
Answer
.
Why not the others: : that is the exact value of a different angle or function. : that is the exact value of a different angle or function. : that is the exact value of a different angle or function.
Practise more Trigonometric Ratios.
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