1c:I[1254,["7330","static/chunks/d3ac728e-78c3d5d7a486ed3a.js","5159","static/chunks/5159-48592f0bf1a47f9d.js","8175","static/chunks/8175-f84d59b9bd013e10.js","8167","static/chunks/8167-b25693a0140130f2.js","664","static/chunks/664-bceb0f356f9312eb.js","3703","static/chunks/app/practice-question/%5Bslug%5D/page-d1408559b663b83f.js"],"PracticeQuestionCard"] 1b:T46a,{"@context":"https://schema.org","@type":"QAPage","name":"If θ be a positive acute angle satisfying cos2θ + cos4θ = 1, then the…","url":"https://vidyalelo.com/practice-question/if-%CE%B8-be-a-positive-acute-angle-satisfying-cos2%CE%B8-cos4%CE%B8-then-the-value-of-tan2%CE%B8-tan4%CE%B8-is-93280","keywords":"practice questions, MCQ, MCQs with answers, objective questions, competitive exam questions, Competitive Exams, Competitive Exams MCQ, Competitive Exams MCQs, Competitive Exams questions, Competitive Exams practice questions, Aptitude, Aptitude MCQ, Aptitude MCQs, Aptitude questions, Aptitude practice questions, Trigonometry","mainEntity":{"@type":"Question","name":"If θ be a positive acute angle satisfying cos2θ + cos4θ = 1, then the…","text":"If θ be a positive acute angle satisfying cos2θ + cos4θ = 1, then the value of tan2θ + tan4θ is?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Option B. 1. Answer & Solution Answer: Option B Solution: & co s^2 + co s^4 = 1 & co s^4 = 1 - ^2 & co s^4 = ^2 & ^2 . ^2 = ^2 & ^2 = ^2 ^2 & co s^2 = ta n^2 & ta n^2 + ta n^4 & co s^2 + co s^4 = 1"}}}1d:T466,

Answer & Solution

Answer: Option B

Solution:

$$\eqalign{ & {\text{co}}{{\text{s}}^2}\theta + {\text{co}}{{\text{s}}^4}\theta = 1 \cr & \Rightarrow {\text{co}}{{\text{s}}^4}\theta = 1 - {\cos ^2}\theta \cr & \R