Adding or Subtracting Trigonometric Expressions In Exercises 43-48, perform the addition or subtraction and use the fundamental identities to simplify. (There is more than one correct form of each answer.) sin x 1 + cos x + sin x 1 - cos x
Adding or Subtracting Trigonometric Expressions In Exercises 43-48, perform the addition or subtraction and use the fundamental identities to simplify. (There is more than one correct form of each answer.) sin x 1 + cos x + sin x 1 - cos x
Solution Summary: The author explains how to perform the addition or subtraction and simplify the trigonometric expression using fundamental identities.
Adding or Subtracting Trigonometric Expressions In Exercises 43-48, perform the addition or subtraction and use the fundamental identities to simplify. (There is more than one correct form of each answer.)
Find the (exact) direction cosines and (rounded to 1 decimal place) direction angles of = (3,7,6)
Let a = (-1, -2, -3) and 6 = (-4, 0, 1).
Find the component of b onto a.
Forces of 9 pounds and 15 pounds act on each other with an angle of 72°.
The magnitude of the resultant force
The resultant force has an angle of
pounds.
* with the 9 pound force.
The resultant force has an angle of
with the 15 pound force.
It is best to calculate each angle separately and check by seeing if they add to 72°.
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