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Jlenok [28]
3 years ago
9

Simplify the expression by using a double-angle formula or a half-angle formula. (a) cos2 θ 2 − sin2 θ 2

Mathematics
1 answer:
SCORPION-xisa [38]3 years ago
6 0
If this is supposed to be
cos^{2}θ-sin^{2}θ
Then this can simply be reduced to
cos2θ
by the double angle formula for cosine



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The five evidence-based recommendations addressed in the practice guide include all of the following except:
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This??? What is wrong with it?
ELEN [110]

Answer:

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6 0
3 years ago
The variables y and x have a proportional relationship, and y = 5 when x = 4. What is the value of x when y = 8? Enter your answ
Charra [1.4K]

Answer

Find out the what is the value of x when y = 8 .

To prove

As given

The variables y and x have a proportional relationship.

y \propto x

y = kx

Where k is the constant of proportionality.

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5 = 4k

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7 0
3 years ago
Read 2 more answers
Plz help me by answering these circled questions<br>in steps plz
igor_vitrenko [27]

a- is -28 and i’m working out the rest for you now

3 0
3 years ago
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