3 years ago

Solve the equation.

Mathematics

1 answer:

ra1l [238]3 years ago

3 0

Answer:

hhhhh

Step-by-step explanation:

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Evaluate u^2 -2u+4 when u= -3

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Answer:

Step-by-step explanation: Sub -3 into where all the u’s are. So it would be

(-3)^2 - 2(-3) + 4

Which would equal 19

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Step-by-step explanation:

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Step-by-step explanation:

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3 years ago

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Kitty [74]

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Step-by-step explanation:

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3 years ago

Can someone help me ? i have no clue how to figure this out

Ad libitum [116K]

$\cos t (\sec t - \cos t) = \sin^2 t$

$\cos t (\dfrac{1}{\cos t} - \cos t) = \sin^2 t$

$\dfrac{\cos t}{\cos t} - \cos^2 t = \sin^2 t$

$1 - \cos^2 t = \sin^2 t$

Use the identity: $\sin^2 t + \cos^2 t = 1$ and solve for $\sin^2 t$ . You get: $\sin^2 t = 1 - \cos^2 t$

Do the substitution on the left side to get:

$\sin^2 t = \sin ^2 t$

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3 years ago

Read 2 more answers