Expert answer:Six Trigonometry Questions
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1.)
Find the exact value of y = arcsin (- �) if it exists. Do not use a calculator. (Hint: Recall domain
restriction for the inverse sine function)
2 .)
Evaluate the given expression without using a calculator.
y = tan(cos-1
3.)
Write the given expression as an algebraic expression in terms of x for x > 0.
y = sin(cos-1 x)
¾)
1. )
Find the length of side a, without using a calculator. Show all work.
2.)
Determine the remaining sides and angles for triangle ABC, given the following information:
C = 74.08 ° , B = 69.38 ° , c = 45.38 m. Draw a diagram labeling all given information.
3.)
To find the distance AB across a river, a surveyor laid off a distance BC = 354 m on one side of the
river. It is found that B = 112°10′ and C = 15°20′. Find AB. See the given figure
4.)
Find the area of the triangle ABC with the given information; C = 72.2° , b = 43.8 ft, a = 35.1 ft
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