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Norma-Jean [14]
3 years ago
12

Please help.... both pictures are the questions

Mathematics
1 answer:
Veseljchak [2.6K]3 years ago
5 0
I, thinking 12.45 because if u divide by 6 reaplace the 4 with a 5 it will equal 12.45 for the secondd one at the top
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RSB [31]
Answer for the question is A
3 0
2 years ago
Help me plz idk how
Alika [10]
Hello there,

For problem one 
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8 0
3 years ago
Find the exact value of the trigonometric expression given that sin u = − 8 17 and cos v = − 24 25 . (Both u and v are in Quadra
Rashid [163]

Answer: sin u = -5/13 and cos v = -15/17

Step-by-step explanation:

The nice thing about trig, a little information goes a long way. That’s because there is a lot of geometry and structure in the subject. If I have sin u = opp/hyp, then I know opp is the opposite side from u, and the hypotenuse is hyp, and the adjacent side must fit the Pythagorean equation opp^2 + adj^2 = hyp^2.

So for u: (-5)^2 + adj^2 = 13^2, so with what you gave us (Quad 3),

==> adj of u = -12 therefore cos u = -12/13

Same argument for v: adj = -15,

opp^2 + (-15)^2 = 17^2 ==> opp = -8 therefore sin v = -8/17

The cosine rule for cos (u + v) = (cos u)(cos v) - (sin u)(sin v) and now we substitute: cos (u + v) = (-12/13)(-15/17) - (-5/13)(-8/17)

I am too lazy to do the remaining arithmetic, but I think we have created a way to approach all of the similar problems.

3 0
2 years ago
How is algebra done?​
Helga [31]
Can you be more specific
3 0
3 years ago
Please help with this question<br> Only real answers please.
Evgesh-ka [11]

minimum (-2,-2)

hope this will help

6 0
3 years ago
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