SOLUTION: The expression cos70cos10 + sin70sin10 is equivalent to?

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Question 439331: The expression cos70cos10 + sin70sin10 is equivalent to?
Found 2 solutions by stanbon, robertb:
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
The expression cos70cos10 + sin70sin10 is equivalent to?
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= sin(70+10)
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= sin(80)
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= 0.9848
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Cheers,
Stan H.
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Answer by robertb(5830) About Me  (Show Source):