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) 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) ...
sinA+sin2A=1 then cos2A+cos4A=? - Brainly.in
WebIf sinA + sin 2 A = 1, then the value of the expression (cos 2 A + cos 4 A) is 1. Explanation: Given, sinA + sin 2 A = 1. ⇒ sin = 1 – sin 2 A = cos 2 A .....[∵ sin 2 θ + cos 2 θ = 1] On … 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. greek optical refinements
Solve sinA+sin2A+sin3A+sin4A/cosA+cos2A-cos3A-cos4A=cotA …
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. Web30 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. 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. flower camping la rochelambert