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Andrews [41]
2 years ago
5

Prove the identity of tan(pi - x) = - tan x

Mathematics
1 answer:
liq [111]2 years ago
8 0

Two ways:

Step-by-step explanation:

1. First way. Using the trig unit circle.

tan (pi - x) = - tan x

2. Second way. Apply the identity:

tan(a-b)=tan a- tan b/ 1 - tan a×tan b

tan (π - x)= tan π - tanx/1 - tan(π)×tanx

Since tan (pi) = 0, therefor:

tan(π−x)=−tanx

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Artyom0805 [142]

Answer:

80

Step-by-step explanation:

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2 years ago
A line has a slope of 8 and a y-intercept of 0 what is its equation in slope intercept form
Deffense [45]
Slope-intercept form is y = mx + b.
In this form, m is slope and b is y-intercept.
Slope is rise over run. The formula for this is (y2-y1)/(x2-x1).
Y-intercept is the value of y when x is equal to 0.

1. Slope = 8 ; Y-intercept = 0
y = mx + b
m = 8 ; b = 0
y = 8x + 0
y = 8x

2. Slope = 1 ; Y-intercept = 2
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The answer to #1 is y = 8x.
The answer to #2 is y = x + 2.

Hope this helps!
4 0
2 years ago
6. Which equation or inequality represents the following description? & Multiply the quantity 2 more than a number by 8. The
Rama09 [41]

Answer:C it’s bc it says at least 12 time the number subtracted from 76

Step-by-step explanation:

If it’s wrong sry if your gonna be mean to me just work it by your self don’t use brainly

3 0
2 years ago
In a certain country, the car license plate formed by 4 numbers from the digits 1-9 followed by 3 letters from the alphabet. How
andriy [413]

Answer:

78,624,000 license plates

Step-by-step explanation:

For each of the 4 numbers, we have the following possibilities:

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Second number: 9 digits possible (one used)

Third number: 8 digits possible (two used)

Fourth number: 7 digits possible (three used)

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Second letter: 25 digits possible (one used)

Third letter: 24 digits possible (two used)

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7 0
2 years ago
What is the degree of the monomial 3x^2y^3?
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When we say the degree of the monomial, <span>it means that it is the sum of the exponents of all the variables of the monomial. For this expression, the </span><span>degree is </span><span>5<span>(=2+3<span>). Therefore, the correct answer would be 5. Hope this helps you!</span></span></span>
3 0
3 years ago
Read 2 more answers
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