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9 sec² A – 9 tan² A is equal to
We know the trigonometric identity: sec²A - tan²A = 1. Thus: 9(sec²A - tan²A) = 9(1) = 9. This question is associated with Chapter 8, "Introduction to Trigonometry," from the Class 10th NCERT Mathematics textbook. Provide your answer in accordance with the concepts and understanding gained from thisRead more
We know the trigonometric identity:
sec²A – tan²A = 1.
Thus:
9(sec²A – tan²A) = 9(1) = 9.
This question is associated with Chapter 8, “Introduction to Trigonometry,” from the Class 10th NCERT Mathematics textbook. Provide your answer in accordance with the concepts and understanding gained from this chapter.
For more please visit here:
See lesshttps://www.tiwariacademy.in/ncert-solutions/class-10/maths/
If net electric flux through a closed surface is zero, we can infer
The correct answer is (a) no net charge is enclosed by the surface. According to Gauss's law, the net electric flux through a closed surface is given by Φ = Qenc/ϵ0 . If the flux is zero, the net charge enclosed (Qenc) must also be zero, meaning either no charge is inside or equal positive and negaRead more
The correct answer is (a) no net charge is enclosed by the surface.
According to Gauss’s law, the net electric flux through a closed surface is given by
Φ = Qenc/ϵ0
. If the flux is zero, the net charge enclosed (Qenc) must also be zero, meaning either no charge is inside or equal positive and negative charges cancel out.
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See lesshttps://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-2/
Why is it necessary to measure ingredients correctly while preparing food?
Measuring ingredients accurately is essential to achieve the desired taste, texture and consistency in food. Proper measurement ensures that flavors are balanced and ingredients are used efficiently, preventing excess or deficiency in a recipe. It also helps in maintaining nutritional value, avoidinRead more
Measuring ingredients accurately is essential to achieve the desired taste, texture and consistency in food. Proper measurement ensures that flavors are balanced and ingredients are used efficiently, preventing excess or deficiency in a recipe. It also helps in maintaining nutritional value, avoiding food wastage and ensuring portion control. Whether using standard measuring cups, teaspoons or weighing scales, precision in ingredient measurement improves the quality and appeal of fireless dishes.
See lessIf cos A + cos²A = 1, then sin² A + sin⁴ A =
We are given the equation: cos A + cos²A = 1. We need to find the value of sin²A + sin⁴A. Step 1: Express cos²A in terms of cos A Rearrange the given equation: cos²A = 1 - cos A. Step 2: Use the Pythagorean identity From the Pythagorean identity, we know: sin²A + cos²A = 1. Substitute cos²A = 1 - coRead more
We are given the equation:
cos A + cos²A = 1.
We need to find the value of sin²A + sin⁴A.
Step 1: Express cos²A in terms of cos A
Rearrange the given equation:
cos²A = 1 – cos A.
Step 2: Use the Pythagorean identity
From the Pythagorean identity, we know:
sin²A + cos²A = 1.
Substitute cos²A = 1 – cos A into the identity:
sin²A + (1 – cos A) = 1.
Simplify:
sin²A = cos A.
Step 3: Express sin⁴A in terms of sin²A
Since sin²A = cos A, we can write:
sin⁴A = (sin²A)² = (cos A)² = cos²A.
Step 4: Substitute into sin²A + sin⁴A
Now substitute sin²A = cos A and sin⁴A = cos²A into the expression sin²A + sin⁴A:
sin²A + sin⁴A = cos A + cos²A.
From the given equation, we know:
cos A + cos²A = 1.
Thus:
sin²A + sin⁴A = 1.
This question is from Chapter 8 of the Class 10th NCERT Mathematics book, which deals with the Introduction to Trigonometry. Answer the question according to your understanding of the chapter.
For more please visit here:
See lesshttps://www.tiwariacademy.in/ncert-solutions/class-10/maths/
Three capacitors 2 pF, 3 pF and 6 pF are joined in series with eachother. The equivalent capacitance is
The correct answer is (d) 1/2 µF. For capacitors in series, the equivalent capacitance is given by: 1/Ceq = 1/C₁ + 1/C₂ + 1/C₃ Substituting C1 = 2 pF, C₂ = 3 pF and C₃ = 6 pF, we get Ceq = 1 pF = 1/2 µF. For more visit here: https://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-2/
The correct answer is (d) 1/2 µF.
For capacitors in series, the equivalent capacitance is given by:
1/Ceq = 1/C₁ + 1/C₂ + 1/C₃
Substituting C1 = 2 pF, C₂ = 3 pF and C₃ = 6 pF, we get Ceq = 1 pF = 1/2 µF.
For more visit here:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-2/