a) Use an Addition or Subtraction Formula to write the expression as a trigonometric fu sin cos 15. sin 15 - cosl Find its exact value. Submit Answer 6) Use an Addition or Subtraction Formula to write the expression as a trigonometric fu tan(79°) – tan(19°) 1 + tan(79°) tan(19°) - Find its exact value. Use an Addition or Subtraction Formula to write the expression as a trigonometric fu (-) 13n 13n cos 15 - sin sin cosl - 15 Find its exact value.

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A: Explanation of the answer is as follows

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A: topic - Inverse trigonometric functions

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A: Given side a=38.6 Given side b=30.9 angle B=35°12'=35+12/60=35.2°

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A: Given: A=4921, B=2007

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A: First find revolutions per minute

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A: We can find the exact value as below.

Q: A constant force of --->F =  moves along a straight line from the point (-1,-6) to the point (7,8). ...

A:   Given that the force F=9,1 and distance D=7--1,8--6=8,14 The formula to calculate work done is:   ...

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A: We have to find correct option

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A: Consider  3.       an=n2-1n2+14.       an=-12n-1

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A: The angle of elevation of a tree reduces from 40degree to 20degree when an observer advances 75ft to...

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Q: 7. Find the exact value of each expression using the angle sum and difference formulas: cos 165°

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A: Given triangle △ EFG is an right angle triangle 

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Q: Solve the equation for solutions in the interval [0,21). Use algebraic methods and give exact values...

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A: topic- projection of vector b onto a

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A: First we find out the area of full pizza using formula πr2 because the shape of pizza is circular.

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Q: sin 105° sin(a + 30°) 5.59 4 sin(a + 30°) = 0.692 (a + 30°) = 43.8° a = 13.76°

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A: Given : Shadow of a tower is found to be 30 m longer when sun altitude angle change from 60 to 45

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A: topic- solution of trigonometric equations

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