Math 🔥| Class-10 | Unit-8 | Introduction to Trigonometry | Exercise 8.1 👌 | SANJU JANGRA SIR

Hello Friends/ Students , Welcome to Moksh Tutorials. Here we are trying to impart best Quality Education free of cost through videos and shorts. We hope you would like , share. If not subscribed Plz subscribe it. Thanks for your co-operation. --------------------------------------------------------------------------------------------------------------------------------------------------------------- #education #cbse #ncert #kvs #maths #class10 #chapter8 #trigonometry #exercise 8.1 #solution #importantquestions #sanjujangrasir #mokshtutorials ---------------------------------------------------------------------------------------------------------------------------------------------------------------- EXERCISE 8.1 Concept of Pythagoras theorem and trigonometric ratio and their understanding. Q1. In triangle ABC, right-angled at B, AB = 24 cm, BC = 7 cm. Determine : (i) sin A, cos A (ii) sin C, cos C Q2. find tan P – cot R. Q3. If sin A = 3/4. Calculate cos A and tan A Q4. Given 15 cot A = 8, find sin A and sec A. Q5. Given sec θ = 13 /12 calculate all other trigonometric ratios. Q6. If ∠ A and ∠ B are acute angles such that cos A = cos B, then show that ∠ A = ∠ B Q7. If cot θ = 7/8 evaluate : (i) (1+sin θ )(1-sin θ )/(1+cos θ )(1-cos θ ) (ii) cot2 θ Q 8. If 3 cot A = 4, check whether (1-tan2A)/(1+tan2A) = (cos2A – sin2 A) or not. Q9. In triangle ABC, right-angled at B, if tan A = 1/3 find the value of: (i)sin A cos C + cos A sin C (ii) cos A cos C – sin A sin C Q10. In triangle PQR, right-angled at Q, PR + QR = 25 cm and PQ = 5 cm. Determine the values of sin P, cos P and tan P. Q11. State whether the following are true or false. Justify your answer. (i) The value of tan A is always less than 1. (ii) sec A = 12/5 for some value of angle A. (iii) cos A is the abbreviation used for the cosecant of angle A. (iv) cot A is the product of cot and A. (v) sin θ = 4/3 for some angle θ.