The values would be
sin2x = -3/5
cos2x = -4/5
tan2x = 3/4
What are double angles in trigonometry?
The double angle formulas are used to find the values of double angles of trigonometric functions using their single angle values. For example, the value of cos 30° can be used to find the value of cos 60°. Also, the double-angle formulas can be used to derive the triple-angle formulas.
Given: tanx = -3
Now as we know,
Now
And similarly, we can find the value of tan2x, as
tan2x = sin2x/cos2x
= (-3/5)/(-4/5)
= 3/4
Hence,
The values would be
sin2x = -3/5
cos2x = -4/5
tan2x = 3/4
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Answer: Question 28 answer is larynx
Question 29:The vocal cords are two bands of smooth muscle tissue found in the larynx. The vocal cords vibrate and air passes through the cords from the lungs to produce the sound of your voice.
Question 30:The vocal folds produce sound when they come together and then vibrate as air passes through them during exhalation of air from the lungs. This vibration produces the sound wave for your voice.
Answer:
$3
Step-by-step explanation:
let the cost of apple pie be 
and the cost of chocolate pie be 
.
We then express the situation as:
#Make y the subject of the formula in equation 1 then substitute in 2:
Hence, the cost of a chocolate pie is $3
Answer:
range = (4, 20, 52 )
Step-by-step explanation:
Substitute the given values of x from the domain into the equation and evaluate for y ( the range )
x = 1 : y = 2(1)² + 2 = 2 + 2 = 4
x = 3 : y = 2(3)² + 2 = 18 + 2 = 20
x = 5 : y = 2(5)² + 2 = 50 + 2 = 52
range is y ∈ {4, 20, 52 }
Answer:
80% of 65
Step-by-step explanation:
Hope it will help you.
