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love history [14]
2 years ago
14

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

Mathematics
1 answer:
4vir4ik [10]2 years ago
8 0
The answer is <span>c. 25
</span> 
<span>sin(ϴ + 15) = cos(2ϴ)
</span>sin(ϴ + 15) =sin(25 + 15) =<span>sin(40) =0.64
</span>cos(2ϴ)=cos(2x25)=<span>cos(50)=0.64
</span> so <span>ϴ=25</span>
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