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Korvikt [17]
3 years ago
14

Please help brainiest is award.

Mathematics
1 answer:
Thepotemich [5.8K]3 years ago
7 0

Answer:

*reward

Step-by-step explanation:

i has helped your welcome

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Which of the following are identities? Check all that apply
Natasha2012 [34]

Answer:

A, C

Step-by-step explanation:

Actually, those questions require us to develop those equations to derive into trigonometrical equations so that we can unveil them or not. Doing it only two alternatives, the other ones will not result in Trigonometrical Identities.

Examining

A) True

\frac{1-tan^{2}x}{2tanx} =\frac{1}{tan2x} \\ \frac{1-tan^{2}x}{2tanx} =\frac{1}{\frac{2tanx}{1-tan^{2}x}}\\ tan2x=\frac{1-tan^{2}x}{2tanx}

Double angle tan2\alpha =\frac{1 -tan^{2}\alpha }{2tan\alpha}

B) False,

No further development towards a Trig Identity

C) True

Double Angle Sine Formula sin2\alpha =2sin\alpha *cos\alpha

sin(8x)=2sin(4x)cos(4x)\\2sin(4x)cos(4x)=2sin(4x)cos(4x)

D) False No further development towards a Trig Identity

[sin(x)-cos(x)]^{2} =1+sin(2x)\\ sin^{2} (x)-2sin(x)cos(x)+cos^{2}x=1+2sinxcosx\\ \\sin^{2} (x)+cos^{2}x=1+4sin(x)cos(x)

7 0
3 years ago
Read 2 more answers
If M∠ ABD =64 and M∠CBD=30 then M∠ABC= <br> Need help
Leno4ka [110]

Answer:

\displaystyle m\angle ABC = 34^\circ

Step-by-step explanation:

∠ABD is the sum of the angles ∠ABC and ∠CBD. In other words:

\displaystyle m\angle ABD = m\angle ABC + m\angle CBD

Substitute in known values:

\displaystyle \left(64^\circ\right) = m\angle ABC + \left(30^\circ\right)

And subtract. Hence:

\displaystyle m\angle ABC = 34^\circ

In conclusion, ∠ABC measures 34°.

4 0
2 years ago
Help w #5 !! will mark brainlist
iris [78.8K]

The sum that represents the number of tickets sold if 35 tickets were sold Monday, half of the remaining tickets were sold on Tuesday and 14 tickets were sold on Wednesday.

To start solving this, we can assign t as the variable to the total number of tickets that were sold. So, t = 35 (for Monday) + (t - 35)/2 (for Tuesday) + 14 (for Wednesday). To solve this, we can say t = 49 + (t - 35)/2, or 2t = 98 + t - 35, which equals t = 63. Therefore, 63 tickets were sold total.

7 0
2 years ago
Solve the equation for the specified variable. P= V-I/S. For I.
notsponge [240]
Changing the subject of the formula

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2 years ago
Help me plz :))))) <br>​
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Answer:

2 3 1 3

Step-by-step explanation:

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