(a) Use Addition formula to find the exact value of cos (a + 8).2(a in quadrant III) and csc B(B in quadrant II).if tan a =3'(b) Find the quadrant in which the angle (a + B) lies if csc (a + B)<0.Hint: Use your answer for part (a).Select one:O Quadrant/Quadrant IIO Quadrant IIQuadrant IVENGahp

Use the identity cosα+β=cosαcosβ-sinαsinβ Use tan2x+1=sec2x to find cosine function. Use…

Answered: Use Addition formula to find the exact…

Use Addition formula to find the exact value of cos (a + B). if tan a= 3 (a in quadrant I) and csc B=, (B in quadrant II). %3D 3

Algebra & Trigonometry with Analytic Geometry

13th Edition

ISBN:9781133382119

Author:Swokowski

Publisher:Swokowski

Chapter7: Analytic Trigonometry

Section7.4: Multiple-angle Formulas

Problem 13E

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Question

(a) Use Addition formula to find the exact value of cos (a + 8).
2
(a in quadrant III) and csc B
(B in quadrant II).
if tan a =
3'
(b) Find the quadrant in which the angle (a + B) lies if csc (a + B)<0.
Hint: Use your answer for part (a).
Select one:
O Quadrant/
Quadrant II
O Quadrant II
Quadrant IV
ENG
a
hp

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