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aksik [14]
3 years ago
14

Sin(theta)+cos(theta)=0 what is theta? 20 points someone please help (A-Level pure maths)

Mathematics
1 answer:
Bumek [7]3 years ago
8 0

Answer:

sin(theta) + cos(theta) = 0

sin(theta) = -cos(theta)

sin(theta)/cos(theta) = -1

tan(theta) = -1

theta = - 45° ± k·180°

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Determine the number and types of solutions for<br><br> 6m^2-3m-4=0
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Answer:

2 real solutions

Step-by-step explanation:

Remember this messy thing?

x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}

The <em>quadratic formula</em>, as it's called, gives us the roots to any quadratic equation in standard form (ax² + bx + c = 0). The information on the <em>type</em> of roots is contained entirely in that bit under the square root symbol (b² - 4ac), called the <em>discriminant</em>. If it's non-negative, we'll have <em>real</em> roots, if it's negative, we'll have <em>complex roots</em>.

For our equation, we have a discrimant of (-3)² - 4(6)(-4) = 9 + 96 = 105, which is non-negative, so we'll have real solutions, and since quadratics are degree 2, we'll have exactly 2 real solutions.

4 0
2 years ago
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1/4;2/5;83/100;3/2;7/10;4/5
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3 years ago
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<span>1. Find the difference
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3 0
2 years ago
13.27 = t - 24.45
Alika [10]

Answer:

=

3

7

.

7

2

Step-by-step explanation:

Add

2

4

.

4

5

24.45

24.45

to both sides of the equation

1

3

.

2

7

=

−

2

4

.

4

5

1

3

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2

7

+

2

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4

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2 years ago
Ray BD is the angle bisector of Given that D<br> Om m-ABD=42<br> m-ABD=21<br> Om ABD=96"
djverab [1.8K]
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