The following expressions (1+cosβ)(1−cosβ)sinβ is equivalent to sin³β
<h3>What are Trigonometric Ratios ?</h3>
In a Right angled triangle , trigonometric ratios can be used to determine the value of angles and sides of the triangle.
The trigonometric expression given in the question is
(1+cosβ)(1−cosβ)sinβ
(a+b)(a-b) = a² - b²
( 1 - cos²β)sinβ
By the trigonometric Identity
1-cos²β = sin² β
sin² β x sin β
sin³β
Therefore Option B is the correct answer.
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The answer is c because of the reasoning it gives
Answer:
372
Step-by-step explanation:
62 x 6 = 372
Answer:
Step-by-step explanation:
Given:
See attachment for rectangle LINT
Required
Calculate its perimeter
From the attachment:
Considering triangle LYT, we apply Pythagoras theorem.
Where:
The formula becomes:
Take positive square root of both sides
Next, we calculate the length of NT.
By comparing triangles LYT and NYT
We make use of the following equivalent ratios to solve for NT
Convert to fractions
Make NT, the subject:
The perimeter (P) is then calculated as:
Where
and -- opposite sides of rectangle.
So:
Substitute values for NT and LT
<em>Hence, the perimeter is 22.75 units</em>