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aliina [53]
2 years ago
9

With the aid of a power reducing formula, 14sin² acos² a = ?

Mathematics
1 answer:
Shtirlitz [24]2 years ago
6 0

The reduced form of the trig expression is 7/2sin²2a

<h3>Trigonometry identity</h3>

Trigonometry identities are written in terms of sine, cosine and tangent. Given the trigonometry identity

14sin² acos² a

Since sin(a)cos(a) = sin2a/2, hence

14sin²acos²a = 14[sin(a)cos(a)]²

14sin²acos²a = 14(sin2a/2)²

14sin²acos²a = 14/4(sin²2a)

14sin²acos²a = 7/2sin²2a

Hence the reduced form of the trig expression is 7/2sin²2a

Learn more on trigonometry expression here: brainly.com/question/27904371

#SPJ1

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A marketing consultant was in the process of studying the perceptions of married couples concerning their weekly food expenditur
lara31 [8.8K]

Answer:

We have sufficient evidence to conclude at α = .05 that the husband’s perception would be higher than the wife’s.

Step-by-step explanation:

The hypotheses testing procedure in the given scenario is

H0: Husband’s perception would be similar to the wife’s i.e. μh=μw

Ha: Husband’s perception would be higher than the wife’s i.e. μh>μw

Level of significance: α=0.05

Test statistic: t=2.776

Critical region: t>t(0.05,9)=1.833

Conclusion: As the calculated value of t lies in critical region, so we reject our null hypothesis at 0.05 level of significance. Thus, we have sufficient evidence to conclude at α = .05 that the husband’s perception would be higher than the wife’s.

8 0
2 years ago
Please help me on this one i need it
sergiy2304 [10]
Sophia is more correct in her solution.

7 0
3 years ago
FRAME AN EQUATION AND SOLVE IT. NEED HELP ASAP I only have 5 minutes!​
lawyer [7]

Answer:

<em>The answer to your question is</em><em> 125</em>

Step-by-step explanation:

<em> x = 25 X 5= 125.</em>

<em>The required number is 125.</em>

<u><em>I hope this helps and have a good day!</em></u>

3 0
2 years ago
5y + 3 = 4y - 9 what is y?
Elena L [17]

y =  - 12

Step-by-step explanation:

5y - 4y =  - 9 - 3 \\ y =  - 12

6 0
3 years ago
Can someone please answer step by step?
alukav5142 [94]

Answer:

George is correct

Step-by-step explanation:

if the jacket is in sales for 20% off, Jane's coupon would give her a discount of 10% on top of the already discounted 20%.

Jane is incorrect because, if she added the 2 discount together, she gets a total of 30%, but that is a 30% discount of the original price of $75 which isn't correct. what we want to do is find how much the jacket cost after 20% discount THEN use the coupon to get a further 10% discount on the sales price of the jacket. and for this reason, George is correct.

hope this helped

3 0
2 years ago
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