5 a b c and 7 in picture Findcos CIos°) inUsetheaddirionformula:coscios)cos (60°+ 45° )%3Dhalf ang leformulaUseHhecos (.210°)(Note: 210 = iso+30)coscios )%3Danswersto a) andConvince yourseif har H.eareeaual byappronimaringeach resuitmillion th (sin deci mal places),of thenearestエfcsce =6, with e in Qz, find sin(2@.cos(@) =e is a4, find sec(e)Ifwi th

Find cos CIos) in Use the addiion formula: coscIos) = cos (60+ 45") (6) half ang le formula Use Hhe cosCios) cos ( 210) (Note: 210 s1So+3) %3D convince yourself har ke to O and answeS are eaual by appronimnring each resuit of the million (sin edecimal places), nearest

Find cos CIos) in Use the addiion formula: coscIos) = cos (60+ 45") (6) half ang le formula Use Hhe cosCios) cos ( 210) (Note: 210 s1So+3) %3D convince yourself har ke to O and answeS are eaual by appronimnring each resuit of the million (sin edecimal places), nearest

Trigonometry (MindTap Course List)

8th Edition

ISBN:9781305652224

Author:Charles P. McKeague, Mark D. Turner

Publisher:Charles P. McKeague, Mark D. Turner

Chapter8: Complex Numbers And Polarcoordinates

Section8.3: Products And Quotients In Trigonometric Form

Problem 67PS

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Question

5 a b c and 7 in picture

Find
cos CIos°) in
Use
the
addirion
formula:
coscios)
cos (60°+ 45° )
%3D
half ang le
formula
Use
Hhe
cos (.210°)
(Note: 210 = iso+30)
coscios )
%3D
answers
to a) and
Convince yourseif har H.e
are
eaual by
appronimaring
each resuit
million th (sin deci mal places),
of the
nearest
エf
csce =6, with e in Qz, find sin(2@.
cos(@) =
e is a4, find sec(e)
If
wi th

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