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If sina+sin2a 1 then cos2a+cos4a

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 … 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 …

Prove that sin^4A + cos^4A = 1 - 2 sin^2A·cos^2A - Toppr Ask

Web14 dec. 2016 · 1 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 sides to get rid of the sine. (sina)2 = (cos2a)2 sin2a = cos4a Reuse sin2θ + cos2θ = 1: 1 − cos2a = cos4a 1 = cos4a + cos2a Hopefully this helps! Answer link P dilip_k Dec … Web24 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 ---- … thunder bay name https://footprintsholistic.com

If sinA + Sin2A = 1 Then prove that Cos2A + Cos4A = 1 - Maths ...

Web24 jan. 2024 · If sin A + sin2 A =1,then find the value of cos 2 A + cos4 A - 7808701. iteshpal84 iteshpal84 24.01.2024 Math Secondary School answered If sin A + sin2 A =1,then find the value of cos 2 A + cos4 A See answers Advertisement Advertisement Brainly User Brainly User Answer: 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 . ] 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 … thunder bay native

If sinA+sin2A=1,then what is the value of cos2a+cos4A? - Brainly

Category:[Solved] If sinA + sin2A = 1 then what is the value of cos2A + cos4A?

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If sina+sin2a 1 then cos2a+cos4a

Solve sinA+sin2A+sin3A+sin4A/cosA+cos2A-cos3A-cos4A=cotA …

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 … 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 …

If sina+sin2a 1 then cos2a+cos4a

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WebQ: If sinA + sin2A = 1, then cos2A + cos4A = …… (1) ½ (2) 1 (3) 2 (4) 4 A: Given that sinA+sin2A=1 sinA=1-sin2A sinA=cos2A Q: Find the exact value of the expression sin-1 (cos 2π/3). Do not use a calculator. A: From unit circle we get cos 2π/3= -1/2 Q: If sin θ = -0.9, find the value of sin θ + sin (θ + 2!) + sin (θ + 4) WebA: Given that sinA+sin2A=1 sinA=1-sin2A sinA=cos2A. Q: Find the exact value of the expression sin-1 (cos 2π/3). Do not use a calculator. A: From unit circle we get cos …

WebIf sin A + sin2A = 1, then the value of cos2A + cos4A is from Quantitative Aptitude Trigonometry Advertisement Trigonometry Multiple Choice Questions 61. If , then the value of tan θ is (θ is acute) 155 Views Answer 62. If then the value of is 124 Views Answer 63. If the value of is 359 Views Answer 64. Web8 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) ...

Web26 mrt. 2024 · Prove that cos4A – sin4A + 1 = 2 cos2A. Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries.

Web29 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 ...

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 ... thunder bay nbskWeb17 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 thunder bay netflixWeb3 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 thunder bay ndpWebIf sinA+sin 2A=1, then the value of the expression (cos 2A+cos 4A) is A 1 B 21 C 2 D 3 Medium Solution Verified by Toppr Correct option is A) sinA+sin 2=1 sinA=1−sin 2A sinA=cos 2A Now cos 2A+cos 2A.cos 2A =sinA+sin 2A =1 ... (given) Solve any question of Introduction to Trigonometry with:- Patterns of problems > Was this answer helpful? 0 0 thunder bay name originWeb25 mei 2024 · If sinA + sin^2A = 1, then the value of the expression (cos^2A + cos^4A) is (a) 1 (b) 0 (c) 7 (d) 13 - Sarthaks eConnect Largest Online Education Community. thunder bay national marine sanctuary factsWebIf Cos4A/ cos2B + sin4A/cos2B = 1 Then prove that: Cos4B/cos2A + sin4B/sin2A = 1 A and B being acute angles of right angled triangle. thunder bay netnewsledgerWebGiven: 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. thunder bay natural gas