SOLUTION: Could someone please explain how to do this problem?
Evaluate 3cos(cos70degrees + cos20degrees)squared - 3cos50degrees without using a calculator. All work must be done by hand
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-> SOLUTION: Could someone please explain how to do this problem?
Evaluate 3cos(cos70degrees + cos20degrees)squared - 3cos50degrees without using a calculator. All work must be done by hand
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Question 283851: Could someone please explain how to do this problem?
Evaluate 3cos(cos70degrees + cos20degrees)squared - 3cos50degrees without using a calculator. All work must be done by hand on your answer sheet.
My trig is rusty and I am having some difficulties.
Thanks! Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! Evaluate 3cos(cos70degrees + cos20degrees)squared - 3cos50degrees without using a calculator.
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3cos(cos70degrees + cos20degrees)
(cos70degrees + cos20degrees) is > 1. The cosine can't exceed 1 for real numbers.
