- A1
- B1/2
- C1/4
- D√2
Step-by-Step Solution
Squaring gives siA + cosinA·cosA = 2, so 1 + 2sinA·cosA = 2 and sinA·cosA = 1/2.
Answer: B) 1/2
If sinA + cosA = √2, then sinA·cosA equals:
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