Class 10 Maths
Introduction to Trigonometry
Question 1:
If sin θ = cos θ, then find the value of 2 tan θ + cos2 θ.
Question 2:
If sin θ + cos θ = 1, prove that cos θ - sin θ = ±1
Question 3:
If sin (x – 20)° = cos (3x – 10)°, then find the value of x.
Question 4:
Prove that
Question 5:
If sin2 A = , where A is an acute angle, then find the value of A.
Question 6:
Evaluate:
Question 7:
Evaluate:
Question 8:
If x = a cos θ, y = b sin θ, then find the value of b2x2 + a2y2 – a2b2.
Question 9:
Let A, B and C are interior angles of a triangle ABC then prove that
sin = cos
Question 10:
Let A, B and C are interior angles of a triangle ABC. If angle C equals to 90° , then find the value of sec (A + B).
Question 11:
In a ∆ABC, if ∠C = 90°, prove that sin2 A + sin2 B = 1.
Question 12:
If tan(A + B) = √3 and tan(A - B) = 1, 0° < A + B < 90° and A > B then find the value of A and B.
Question 13:
Evaluate: sin 25° cos 65° + cos 25° sin 65°.
Question 14:
If sec A + tan A = p, then find the value of cosec A.
Question 15:
Express the ratios cos A, tan A and sec A in terms of sin A.
Question 16:
If tan 2A = cot (A – 18° ), where 2A is an acute angle, find the value of A.
Question 17:
Express sin 67° + cos 75°
in terms of trigonometric ratios of angles between 0°
and 45°
.
Question 18:
Prove that sec A(1 – sin A)(sec A + tan A) = 1
Question 19:
If sin(A – B) = , cos(A + B) =
, 0° < A + B ≤ 90°, A > B, find A and B.
Question 20:
Let Δ PQR be a right-angle triangle right angled at Q as shown in figure. If PQ = 3 cm and PR = 6 cm then find ∠QPR and ∠PRQ.
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In summary, problem-solving after learning a theoretical concept on CBSE Introduction to Trigonometry Class 10 Maths is an essential part of the learning process. It enhances your understanding, critical thinking abilities, and retention of knowledge. Moreover, it equips you with valuable skills that are applicable in academic, personal, and professional contexts.
You must have heard of the phrase “Practice makes a man perfect”. Well, not just a man, practice indeed enhances perfection of every individual.
Practicing questions plays a pivotal role in achieving excellence in exams. Just as the adage goes, "Practice makes perfect," dedicating time to solve a diverse range of exam-related questions yields manifold benefits. Firstly, practicing questions allows students to familiarize themselves with the exam format and types of problems they might encounter. This familiarity instills confidence, reducing anxiety and improving performance on the actual exam day. Secondly, continuous practice sharpens problem-solving skills and enhances critical thinking, enabling students to approach complex problems with clarity and efficiency. Thirdly, it aids in identifying weak areas, allowing students to focus their efforts on improving specific topics. Moreover, practice aids in memory retention, as active engagement with the material reinforces learning. Regular practice also hones time management skills, ensuring that students can allocate appropriate time to each question during the exam. Overall, practicing questions not only boosts exam performance but also instills a deeper understanding of the subject matter, fostering a holistic and effective learning experience.
All About Daily Practice Problems on Class 10 Maths Introduction to Trigonometry NCERT Chapter 8
Our Daily Practice Problems (DPPs) offer a diverse range of question types, including Multiple Choice Questions (MCQs) as well as short and long answer types. These questions are categorized into Easy, Moderate, and Difficult levels, allowing students to gradually progress and challenge themselves accordingly. Additionally, comprehensive solutions are provided for each question, available for download in PDF format - Download pdf solutions as well as Download pdf Questions. This approach fosters a holistic learning experience, catering to different learning styles, promoting self-assessment, and improving problem-solving skills. With our well-structured DPPs, students can excel in exams while gaining a deeper understanding of the subject matter. Hope you found the content on Class 10 Maths Introduction to Trigonometry NCERT Chapter 8 useful.
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