Q6. The value of sin2 30° – cos2 30° is

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Q6. The value of sin2 30° – cos2 30° is

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(a) –12

(b) √32
(c) 32
(d) –23

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Class 10 Maths swatiqna 3 years 2021-12-23T10:45:20+00:00 2021-12-23T10:45:20+00:00 1 Answer 9 views Enlightened 0

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A scale drawing of an object is the same shape at the object but a different size. The scale of a drawing is a comparison of the length used on a drawing to the length it represents. The scale is written as a ratio. The ratio of two corresponding sides in similar figures is called the scale factor Scale factor= length in image / corresponding length in object If one shape can become another using revising, then the shapes are similar. Hence, two shapes are similar when one can become the other after a resize, flip, slide or turn. In the photograph below showing the side view of a train engine. Scale factor is 1:200 This means that a length of 1 cm on the photograph above corresponds to a length of 200cm or 2 m, of the actual engine. The scale can also be written as the ratio of two lengths.The length of AB in the given figure:
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A scale drawing of an object is the same shape at the object but a different size. The scale of a drawing is a comparison What is the actual width of the door if the width of the door in photograph is 0.35cm?of the length used on a drawing to the length it represents. The scale is written as a ratio. The ratio of two corresponding sides in similar figures is called the scale factor Scale factor= length in image / corresponding length in object If one shape can become another using revising, then the shapes are similar. Hence, two shapes are similar when one can become the other after a resize, flip, slide or turn. In the photograph below showing the side view of a train engine. Scale factor is 1:200 This means that a length of 1 cm on the photograph above corresponds to a length of 200cm or 2 m, of the actual engine. The scale can also be written as the ratio of two lengths.
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swatiqna Enlightened · Answer 1 · 2021-12-23T10:45:59+00:00

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2021-12-23T10:45:59+00:00 December 23, 2021 at 10:45 am

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Ans: (a) –12
The value of cos^2(30) is 3/4.
Solution- Since the value of cos(30)
from the trigonometric values table
is ✓3/2.
So if Cos(30)= ✓3/2

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Q6. The value of sin2 30° – cos2 30° is

Q6. The value of sin2 30° – cos2 30° is

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