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Marizza181 [45]
3 years ago
6

Trigonometric identities

Mathematics
1 answer:
Goryan [66]3 years ago
7 0

Without knowing what Juan's exact steps were, it's hard to say what he did wrong. The least you could say is that his solution is simply not correct.

4 sin²(<em>θ</em>) - 1 = 0

==>   sin²(<em>θ</em>) = 1/4

==>   sin(<em>θ</em>) = ±1/√2

==>   <em>θ</em> = <em>π</em>/4, 3<em>π</em>/4, 5<em>π</em>/4, 7<em>π</em>/4

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Given the following vectors in component form:
Charra [1.4K]

All expressions whose sum represents the same vector as (r + s) + t. is Option b,c,e

<h3>What are the  expressions that equals  (r + s) + t. ?</h3>

Where

r= (2,3)

s= (5,-3)

t= (-8,6)

Generally, the equation for statement is  mathematically given as

(7,0)+(-8,6) ,(2,3)+(-3,3) and (-6,9)+(5,-3) are equal to (r+s)+t

Therefore

x=(2,3)+(5,-3)

x=(7,0)

Now we can calculate (r+s)+t as

(7,0)+(-8,6)

(7-8,0+6)

(-1,6)

For (b)

x=(7,0)+(-8,6)

x=(-1,6)

in this scenario x expressions is equal to (r+s)+t

For (c)

x=(2,3)+(-3,3,)

x=(-1,6)

in this scenario x expressions is equal to (r+s)+t

For (e)

x=(-6,9)+(5,-3)

x=(-1,6)

in this scenario x expressions is equal to (r+s)+t

In conclusion, all expressions whose sum represents the same vector as (r + s) + t. is b,c,e

Read more about vector

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4 0
2 years ago
Which expression is equivalent to the expression 1/4 (x- 2) + 1/3x HELP
Law Incorporation [45]

The answer is 7x/12 - 1/2. Its the first option in your picture. Hope this helps .

3 0
3 years ago
Please help me literally need this to be answered in 2 hours P-L-E-A-S-E !!
Sonja [21]

Answer:

Yeah with that type of problem

Step-by-step explanation:

You aint getting answered for the next 4 hours <3

6 0
2 years ago
What is/are the variable(s) in this expression: 6a-7b+8
Tomtit [17]

Answer:

a , b

Step-by-step explanation:

ans this are the variables

5 0
3 years ago
Find the slope of the line passing through the points (3,9) and 12,-5)​
astraxan [27]

Answer:

9/-24  or ~ -0.38

Step-by-step explanation:

x       y

3      9

12   -15

from 9 to -15 it will be subtracting 24

From 3 to 12 it will be adding 9

y/x = 9/-24  or -0.375 ~ -0.38

7 0
2 years ago
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