Find the value of x from the following trigonometrical equation :

Mathematics

1 answer:

Troyanec [42]3 years ago

7 0

Answer:

4 cos² 60° + 4 sin² 45° -sin² 30° = 4(1/2)2

Step-by-step explanation:

2 + 4 (1/√2)2 - (√3/2)2 = 1 + 2 - 3/4 = 3 - 3/4 = 9/4.

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ANSWER ASAP!! A movie club charges $10 per month, plus $1.50 per rental. Diego spends no more than $25 per month on movies. Desc

Dafna11 [192]

Answer:

The graph has a closed circle at 10

Step-by-step explanation:

Let

x ----> the number of rentals

The phrase "no more" means "less than or equal to"

The inequality that represent this situation is

$1.50x+10\leq 25$

solve for x

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3 years ago

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Which of the following expressions is the conjugate of a complex number with −5 as the real part and 4i as the imaginary part? 5

ladessa [460]

The mathematical expression of the given complex number above is -5 + 4i. The conjugate of this complex number is that which has an opposite operation. The given is an addition operation. That is -5 - 4i. Therefore, the answer is the third among the choices.

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fiasKO [112]

Please give brainliest
1 equals 3 over 4
2 equals 1 over 6
3 equals 1 over 5
4 equals 1 over 3
5 equals 5 over 11
6 equals 1 over 4
7 equals 1 over 5
8 equals 1 over 9
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3 0

2 years ago

A,B and C are the vertices of one triangle.

dsp73

Answer:

Step-by-step explanation:

Given: The triangle with coordinate A(4,6), B(2,-2) and C(-2,-4). D is the mid point of AB and E is the mid point of AC.

To prove: DE is parallel to BC.

Construction: Join DE.

Proof: If we prove the basic proportionality theorem that is $\frac{AD}{DB}=\frac{AE}{EC}$ , then it proves that DE is parallel to BC.