SOLUTION: Help!!
Use the properties of the trigonometric functions to find the exact value of the expression: sin^2 40 degrees + cos^2 40 degrees.
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-> SOLUTION: Help!!
Use the properties of the trigonometric functions to find the exact value of the expression: sin^2 40 degrees + cos^2 40 degrees.
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Question 412569: Help!!
Use the properties of the trigonometric functions to find the exact value of the expression: sin^2 40 degrees + cos^2 40 degrees. Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! sin^2 + cos^2 = 1 for any angle
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Plot the line on a unit circle.
The sine = y/1
cosine = x/1
The hypotenuse is 1, the sum of sin^2 and cos^2
