89) 90) Use an identity to write the expression as a single trigonometric function or as a single number. 91) 92) Use the appropriate sum or difference identity to write the given expression as a function of x alone. 93) Use the given information to find the exact value. < < < < 94) , 0 A ; , B 2πFind. Write the expression as a constant, a single trigonometric function, or a power of a trigonometric function. 95) 96) Write the expression as a trigonometric function of a positive number. 97) 98) Determine whether the given vectors are orthogonal. 99) and Draw a sketch to represent the vector. Refer to the vectors pictured here. -b 100) Estimate the indicated component or components of the vector. Round to an appropriate number of significant digits. 101) Find the vertical component of. ∙ Find a b. = + 7j, = -3.5i - 3.5j 102) a 7i b Find the angle between the given vectors to the nearest tenth of a degree. = = a and b 103) Find the area of the triangle using one of the area formulas. = 104) a 10.6 cm = b 17.1 cm = c 16.9 cm Find the following quotient, and write the quotient in rectangular form, using exact values. 105) Find the indicated vector.
89) 90) Use an identity to write the expression as a single trigonometric function or as a single number. 91) 92) Use the appropriate sum or difference identity to write the given expression as a function of x alone. 93) Use the given information to find the exact value. 94) , 0 < A < ; , < B < 2πFind. Write the expression as a constant, a single trigonometric function, or a power of a trigonometric function. 95) 96) Write the expression as a trigonometric function of a positive number. 97) 98) Determine whether the given vectors are orthogonal. 99) and Draw a sketch to represent the vector. Refer to the vectors pictured here. 100) -b Estimate the indicated component or components of the vector. Round to an appropriate number of significant digits. 101) Find the vertical component of. Find a ∙ b. 102) a = 7i + 7j, b = -3.5i - 3.5j Find the angle between the given vectors to the nearest tenth of a degree. 103) a = and b = Find the area of the triangle using one of the area formulas. 104) a = 10.6 cm b = 17.1 cm c = 16.9 cm Find the following quotient, and write the quotient in rectangular form, using exact values. 105) Find the indicated vector.
PreCalculus-Final-Exam-Review-Trig-Portion11.docx