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1A Find the rectangular coordinates of the point given in polar coordinates. (-9, – 180°) The rectangular coordinates are (Type an ordered pair.)

1A Find the rectangular coordinates of the point given in polar coordinates. (-9, – 180°) The rectangular coordinates are (Type an ordered pair.)

Algebra & Trigonometry with Analytic Geometry
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter6: The Trigonometric Functions
Section6.3: Trigonometric Functions Of Real Numbers
Problem 31E
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1. Find the rectangular coordinates of the point given in polar coordinates. (-9, – 180°) The rectangular coordinates are (Type an ordered pair.) 1B Use a sum or difference formula to find the exact value of the trigonometric function. sec 12 sec (Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression.) 10 1 1 Show that sin *0 = 8 2 cos (20) + 3 cos (40). Which of the following four statements establishes the identity? O A. sin *o= ( sin20): 1- cos (20) 3 1 cos (40) 1 cos (20) +- 2 2 8 В. 2 1+ cos (20) 1 1 sin *0= ( sin?0) cos (20) +3 cos (40) 8 2 Oc. 1+ cos (20) 2 3 sin *o= ( sin*0) = | 1 cos (20) +. cos (40) 8 2 OD. sin *0= ( sin 20)? = 1- cos (20) ) ² 1 cos (20) +. cos (40) 2 8.
Transcribed Image Text:1. Find the rectangular coordinates of the point given in polar coordinates. (-9, – 180°) The rectangular coordinates are (Type an ordered pair.) 1B Use a sum or difference formula to find the exact value of the trigonometric function. sec 12 sec (Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression.) 10 1 1 Show that sin *0 = 8 2 cos (20) + 3 cos (40). Which of the following four statements establishes the identity? O A. sin *o= ( sin20): 1- cos (20) 3 1 cos (40) 1 cos (20) +- 2 2 8 В. 2 1+ cos (20) 1 1 sin *0= ( sin?0) cos (20) +3 cos (40) 8 2 Oc. 1+ cos (20) 2 3 sin *o= ( sin*0) = | 1 cos (20) +. cos (40) 8 2 OD. sin *0= ( sin 20)? = 1- cos (20) ) ² 1 cos (20) +. cos (40) 2 8.
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