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Find ϴ in the equation sin(ϴ + 15) = cos(2ϴ) a. 50 b. 75 c. 25 d. 40
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Find ϴ in the equation sin(ϴ + 15) = cos(2ϴ)

a. 50
b. 75
c. 25
d. 40

User Keineantwort
by
8.6k points

1 Answer

3 votes
the answer is c. 25

sin(ϴ + 15) = cos(2ϴ)
sin(ϴ + 15) =sin(25 + 15) =sin(40) =0.64
cos(2ϴ)=cos(2x25)=cos(50)=0.64
 so ϴ=25
User Srowley
by
7.8k points
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