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ira [324]
3 years ago
10

Use trigonometric identities to solve each equation within the given domain.

Mathematics
1 answer:
choli [55]3 years ago
4 0
<h3>4cos ^4(x) -5cos^2(x)+1=0</h3><h3>(u^-1) (4u^-1)=0</h3><h3>(u^-1)=0</h3><h3>u^=1</h3><h3>u=√1</h3><h3>u=1</h3><h3>u=±1</h3><h3>cos (x)=±1</h3><h3>x=0 or π</h3><h3 /><h3>4u^-1=0</h3><h3>4u^=1</h3><h3>u^=1/4</h3><h3>u=√1/4</h3><h3>u=1/2</h3><h3>u= ±1/2</h3><h3>cos (x)=±1/2</h3><h3>x= π/3 or 4π/3</h3><h3 /><h3>x= 0, π/3, π, 4π/3</h3>
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