Ex 8 3 2 Write All Trigonometric Ratios In Termsо Transcript. ex 8.3, 2 write all the other trigonometric ratios of ∠ a in terms of sec a. cos a we know that cos a = 𝟏 𝒔𝒆𝒄𝑨 tan a we know that 1 tan2 a = sec2 a tan2 a = sec2 a − 1 tan a = ± √ (𝑠𝑒𝑐2 𝐴 −1) here, a is acute angle (i.e. less than 90°) & tan a is positive when a is acute ∴ tan a = √. Question 2. write all the other trigonometric ratios of ∠a in terms of sec a. solution: (i) cos a. cos a = 1 sec a (ii) sin a. we know that. sin 2 a = 1 – cos 2 a. also , cos 2 a = 1 sec 2 a. sin 2 a = 1 – 1 sec 2 a. sin 2 a = (sec 2 a – 1) sec 2 a. sin a = (sec 2 a – 1) 1 2 sec a (iii) tan a. we know that. tan 2 a 1 = sec 2.
Ex 8 3 2 Write All Trigonometric Ratios In Termsо Class 10 ii trigonometry ex : 8.4 question no. 2 write all the other trigonometric ratio of∠ a in terms of sec a.trigonometry ex : 8.1question no.1 https:. Access ncert solutions for class 10 maths chapter 8 introduction to trigonometry exercise 8.3. 1. express the trigonometric ratios sina, seca and tana in terms of cota. ans: for a right triangle we have an identity cosec2a = 1 cot2a. let us consider the above identity, we get. Write all the other trigonometric ratios of angle a in terms of sec aq: write all the other trigonometric ratios of ∠ a in terms of sec a.hint 💡 cosec a = 1. Maths ncert solutions class 10 chapter 8 exercise 8.4 question 2. summary: all the other trigonometric ratios of ∠a in terms of sec a are cos a = 1 sec a, sin a = √(sec 2 a − 1) sec a, tan a = √(sec 2 a − 1), cot a = 1 √(sec 2 a − 1), and cosec a = sec a √(sec 2 a − 1).
Ex 8 3 2 Write All Trigonometric Ratios In Termsо Write all the other trigonometric ratios of angle a in terms of sec aq: write all the other trigonometric ratios of ∠ a in terms of sec a.hint 💡 cosec a = 1. Maths ncert solutions class 10 chapter 8 exercise 8.4 question 2. summary: all the other trigonometric ratios of ∠a in terms of sec a are cos a = 1 sec a, sin a = √(sec 2 a − 1) sec a, tan a = √(sec 2 a − 1), cot a = 1 √(sec 2 a − 1), and cosec a = sec a √(sec 2 a − 1). To solve a trigonometric simplify the equation using trigonometric identities. then, write the equation in a standard form, and isolate the variable using algebraic manipulation to solve for the variable. use inverse trigonometric functions to find the solutions, and check for extraneous solutions. Trigonometric ratios (definition, formulas, examples).
Ex 8 3 2 Write All Trigonometric Ratios In Termsо To solve a trigonometric simplify the equation using trigonometric identities. then, write the equation in a standard form, and isolate the variable using algebraic manipulation to solve for the variable. use inverse trigonometric functions to find the solutions, and check for extraneous solutions. Trigonometric ratios (definition, formulas, examples).
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