9. Write the product 2 sin(2rt/9) cos(Tt/9) as a sum of function values. sin(T1/3)+sin(Tt/9) sin(t/3)-sin(Tt/9) 2 sin(rt/9)-cos(Tt/9) O 2sin(T/9)+cos(T/9)
9. Write the product 2 sin(2rt/9) cos(Tt/9) as a sum of function values. sin(T1/3)+sin(Tt/9) sin(t/3)-sin(Tt/9) 2 sin(rt/9)-cos(Tt/9) O 2sin(T/9)+cos(T/9)
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.4: Multiple-angle Formulas
Problem 40E
Related questions
Question
pls answer no.9 on paper
![8. Express the product sin30 cos50 as a
sum.
O 1/2 (sin80-sin20)
O 1/2 (sin80+sin20)
sin80-sin20
sin80+sin20)
9. Write the product 2 sin(2Tt/9)
cos(T/9) as a sum of function values.
sin(Tt/3)+sin(t/9)
sin(Tt/3)-sin(t/9)
2 sin(t/9)-cos(T/9)
2sin(T/9)+cos(t/9)
10. Express cos55°cos45° as a sum.
O 1/2 (cos100°+ cos10°)
O 2 (sin100°- sin10°)
sin100°+ cos10°
-2 (sin50°+ cos10°)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fbeb8cab2-97f6-451b-b913-40024f68edd1%2F97c19c30-2add-468e-9fb0-b092cde9377e%2Fhz73xte_processed.jpeg&w=3840&q=75)
Transcribed Image Text:8. Express the product sin30 cos50 as a
sum.
O 1/2 (sin80-sin20)
O 1/2 (sin80+sin20)
sin80-sin20
sin80+sin20)
9. Write the product 2 sin(2Tt/9)
cos(T/9) as a sum of function values.
sin(Tt/3)+sin(t/9)
sin(Tt/3)-sin(t/9)
2 sin(t/9)-cos(T/9)
2sin(T/9)+cos(t/9)
10. Express cos55°cos45° as a sum.
O 1/2 (cos100°+ cos10°)
O 2 (sin100°- sin10°)
sin100°+ cos10°
-2 (sin50°+ cos10°)
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