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If sina+sin2a 1 then cos2a+cos4a

Web24 sep. 2009 · If sinA + Sin 2 A = 1 Then prove that Cos 2 A + Cos 4 A = 1 Share with your friends 15 Follow 12 Certified by MeritNation Expert Ayushi Bafna, added an answer, on … WebSolve your math problems using our free math solver with step-by-step solutions. Our math solver supports basic math, pre-algebra, algebra, trigonometry, calculus and more.

If sinA + sin^2A = 1, then the value of the expression (cos^2A

Web30 aug. 2013 · If SinA+sin^2A=1then cos^2A+cos^4A=1 Trigonometry The angle of elevation of a cloud from a point h meter above a lake is beeta and the angle of … medina county building department medina ohio https://gloobspot.com

If sin A + sin^2A = 1 , then the value of the expression (cos^2A

WebSolution The correct option is A 2 y Explanation for the correct option. Step 1: Find the value of x 2 + y 2 Given that, sin A + sin 2 A = x and cos A + cos 2 A = y. WebProve that, sin 2 A + cos 2 A = 1 Solution Step 1. Find out sin A and cos A Let ∆ A B C be right-angle triangle where A B = p, B C = q a n d A C = r. In the right-angle triangle ∆ A B C , sin A = Perpendicular Hypotenuse ⇒ sin A = B C A C ⇒ sin A = q r And, cos A = Base Hypotenuse ⇒ cos A = A B A C ⇒ cos A = p r Step 2. WebFirst, group the first two terms and factor it. Then, apply the Pythagorean identity which is . Then, group the second and last term at the left side of the equation. To simplify the expression ... nagrath sunitha

If sina + sin ^2a = 1, then cos ^2a + cos ^4a - Toppr Ask

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If sina+sin2a 1 then cos2a+cos4a

If sin A + sin2 A =1,then find the value of cos 2 A + cos4 A

WebIf sin A + sin 2 A = 1, then the value of cos 2 A+cos 4 A is 1 2/3 2 1 1/2 1 Explanation: sinA = 1-sin 2 A = cos 2 A cos 2 A+ cos 4 A=sinA+ sin 2 A =1 Previous Papers Model Tests … Web16 nov. 2024 · Math Secondary School answered SinA+sin2A=1 then cos2A+cos4A=? See answers Advertisement mathdude500 Answer: 1 Step-by-step explanation: please find …

If sina+sin2a 1 then cos2a+cos4a

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Web4 jun. 2024 · sinA + sin 2 A = 1. ⇒ sinA = 1 – sin 2 A = cos 2 A ----(1) (? sin 2 θ + cos 2 θ = 1) Squaring on both sides. sin 2 A = cos 4 A ----(2) Substitute (1) and (2) in the given … WebProve that sin^4A + cos^4A = 1 - 2 sin^2A·cos^2A Question Prove that sin 4A+cos 4A=1−2sin 2A⋅cos 2A Medium Solution Verified by Toppr sin 4A+cos 4A We have (a 2+b 2) 2=a 4+b 4+2a 2b 2 ⇒a 4+b 4=(a 2+b 2) 2−2a 2b 2 Take a=sinA and b=cosA we get sin 4A+cos 4A=(sin 2A+cos 2A) 2−2sin 2Acos 2A =1−2sin 2Acos 2A proved. Was this …

Web22 mrt. 2024 · Transcript. Question 12 If sin A + sin2 A = 1, then the value of the expression (cos2 A + cos4 A) is (A) 1 (B) 1/2 (C) 2 (D) 3 Given sin A + sin2 A = 1 sin A = 1 − sin2 A … Web6 okt. 2024 · Given, sin A + 2 cos A = 1 Squaring both sides, we get, sin2A + 4 cos2A + 4sinA cosA = 1 4 cos2A + 4sinA cosA = 1 - sin2A = cos2A 3 cos2A + 4sinA cosA = 0 ... (i) Now, (2sinA - cosA)2 = 4sin2A + cos2A - 4sinA cosA = 4sin2A + cos2A + 3cos2A [Using (i)] = 4 (sin2A + cos2A) = 4 Thus, 2sinA - cosA = 2 Hence, proved. Find Math textbook …

WebIf sina+sin 2a=1,thencos 2a+cos 4a=.......... A 21 B 1 C 2 D 4 Medium Solution Verified by Toppr Correct option is B) Given, sina+sin 2a=1 ⇒sina+1−cos 2a=1 ⇒sina=cos 2a … Web13 dec. 2016 · Explanation: Our starting goal is to turn all terms into cosine. Use the identity sin2θ + cos2θ = 1. sina + 1 − cos2a = 1. sina − cos2a = 0. sina = cos2a. Square both …

WebGiven: sin A + sin 2 A = 1. sin A = 1 – sin 2 A. sin A = cos 2 A .... (i) Squaring both sides. sin 2 A = cos 4 A ..... (ii) Add equations (i) and (ii) sin A + sin 2 A = cos 2 A + cos 4 A = 1.

Web18 mrt. 2024 · Step-by-step explanation : Given :- → sin∅ + sin²∅ = 1 . To find :- → cos²∅ + cos⁴∅ . Solution :- We have, °•° sin∅ + sin²∅ = 1 . ==> sin∅ = 1 - sin²∅ . ==> sin∅ = cos²∅ . [ Squaring both side ] . ==> sin²∅ = cos⁴∅ .......... ( i ) . Now, °•° cos²∅ + cos⁴∅ . = cos²∅ + sin²∅ . [ Using ( i ) ] . = 1 . [ •°• sin²∅ + cos²∅ = 1 . ] nagrath casteWeb24 feb. 2024 · sinA + sin 2 A = 1 Formula used: cos 2 A = 1 – sin 2 A Calculation: sinA + sin 2 A = 1 ---- (i) ⇒ sinA = 1 – sin 2 A ⇒ sinA = cos 2 A ---- (ii) ⇒ sin 2 A = cos 4 A ---- … nagrath surnameWeb30 nov. 2024 · HERE IS UR ANSWER sin A +sin^2A= 1 sina+1−cos2a=1 sina−cos2a=0 sina=cos2a Squaring both sides (sina)2= (cos2a)2 sin2a=cos4a use sin2θ+cos2θ=1: 1−cos2a=cos4a 1=cos4a+cos2a Hope U understand Thanks and Mark me as the BRAINLIEST Advertisement Still have questions? Find more answers Ask your question 13. nagrat membershipWeb17 nov. 2024 · Math Secondary School answered SinA+sin2A=1 then cos2A+cos4A=? See answers Advertisement mathdude500 Answer: 1 Step-by-step explanation: please find the attachment Advertisement suman8615 Answer: 1 is the answer................... Advertisement Advertisement medina county children\u0027s centerWeb29 mrt. 2012 · If sinA + sin 2 A = 1 , then the value of the expression (cos 2 A + cos 4 A) is ? Please help!! Share with your ... Ans: 1. cos2a + cos4a = ( 1 - sin2a) + (cos2a)2 = (sin a ) + (1 sin2a)2 = sin a + ( 1 - sin2a)2 = sin a + sin2 a = 1. 8 ; View Full Answer hope that helps -1 ; sinA + sin 2 A = 1 => sinA = 1-sin 2 A sinA = cos 2 A ... medina county commissioners newsletterWeb8 mrt. 2024 · Prove that \(\frac{cos2A}{1 + sin2A}\) = tan(45° – A) LIVE Course for free. Rated by 1 million+ students ... If sinA + sin2A = 1 then what is the value of cos2A + cos4A? asked Mar 2, 2024 in Trigonometry by PrashantPandey (60.0k points) trigonometry; 0 votes. 1 answer Prove that(sin2A + sin5A - sinA)/(cos2A + cos5A + cosA) ... nagrat membership portalWeb3 dec. 2024 · By formula, Substitute in the above equation, we get Hence proved. Advertisement Anonymous1756 Cos 4 A - Cos2A = (cos2A)2 - (cosA)2 = (1- sin2A)2 - cos2A = 1 + sin4A - 2sin2A - ( 1- sin2A) =1+ sin4A - 2 sin2A -1 + sin2A =sin4A - sin2A since LHS = RHS hence proved. Advertisement New questions in Math medina county career center electives