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Rashid [163]
2 years ago
7

If A=30° and B=60°,show that sinc(A+B)= sinA . cos60°.sin 30°​

Mathematics
1 answer:
notka56 [123]2 years ago
7 0

Answer:

Lol .... I don't know the answer :D :P

Step-by-step explanation:

L.H.S x 0 = 0

R.H.S x 0 = 0

L.H.S = R.H.S

Hence , proved .....

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Please help me in answers 3 and 5
Mama L [17]
3. The correct answer is 2) 3m² - 6. 
(2m² + 3m - 4) + (m² - 3m - 2)   Given
2m² + m²   These numbers are like terms, because they both end in m².
3m²   Since m² can also be written as 1m², and 2 + 1 = 3, this is the sum of 2m² and m² (1m²).

3m + (-3m)   These numbers are like terms, because they both end in m. -3m is negative because it was being subtracted.
0   Since we're adding a negative, it's the same as subtracting something. 3m - 3m is 0.

-4 + (-2)   These numbers are like terms, because they are both simple integers with no variable. Once again, we're adding a negative because it was being subtracted.
-6   -4 + (-2) is the same as -4 - 2, which is -6. Remember that when you're subtracting from a negative, the number seems to become larger. For instance, 1 - 1 is 0, but -1 - 1 is -2.

3m² - 6   Put all of the terms together. We don't have to write out 0, because 0 is the same as nothing.

5. This one is a bit unclear, but I think that the correct answer is 2) II and IV. The slope formula can be written as y = mx + b, where m is the slope and b is the y-intercept, or the place where the line crosses the y-axis. In this equation, b is 2, which is a positive number, so the y-intercept shifts upward. This means that the answer is either 2 or 3. As for |x - 6|, the way this is written makes the equation somewhat confusing. I believe that the bars are meant as absolute value bars, which, put simply, turn negatives into positives. This means that this part is x + 6, so the line shifts to the right. However, if they were intended as parentheses, the line would shift to the left, because we're subtracting 6 from x. I'm almost certain those were intended as absolute value bars, though, so I think that the answer is 2.

Hope this helps!
4 0
3 years ago
Can I simplify this down anymore? a (a+b) (a-b) / a^2 + 2ab + 2b^2
Andrew [12]
I don't believe you can. It would end up being 1/2 for all the terms so just leaving it as a fraction would be neater.
4 0
3 years ago
What are the features of the quadratic function f(x) = x^2 + 10x + 21?
defon

A is the correct answer buddy.

_________________________________

good luck.♥️♥️♥️♥️♥️

3 0
3 years ago
POINT BESTIES TAKE YOUR POINTS!!
seraphim [82]

Answer:

thanks

Step-by-step explanation:

I'll take it

6 0
3 years ago
Read 2 more answers
6 dollars for 3 cans of tuna
SSSSS [86.1K]

Answer: 2 dollers for each can of tuna

Step-by-step explanation: 2 x 3 = 6 or 2 + 2 + 2 = 6

4 0
3 years ago
Read 2 more answers
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