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Have a tough question .I expect an answer.If sinA+sin2A+sin3A = 1.then prove that .cos6A-4cos4A+8cos2A=4.the replier has his trigonometry almost perfect
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Have a tough question .I expect an answer.If sinA+sin2A+sin3A = 1.then...
Let me ,make it simple ,bro has given good answer ,but square looks like "2" so I will re-write .sinA + sin²A + sin³A = 1=> sinA + sin³A = 1 - sin²A=> sinA ( 1+sin²A ) = cos²A=> sinA ( 1 + 1 - cos²A ) = cos²A=> sinA ( 2 - cos²A ) = cos²A=> sinA = cos²A / ( 2 - cos²A)=> √ ( 1 - cos²A ) = cos²A / 2- cos²A=> 1 - cos²A = ( cos²A )² / ( 2 - cos²A )²=> 1 - cos²A = cos⁴A / ( 4 + cos⁴A - 4 cos²A )=> ( 1 - cos²A ) ( 4 + cos⁴A - 4 cos²A ) = cos⁴A=> ( 4 + cos²A - 4 cos²A -4cos²A - cos^6A + 4cos⁴A = cos⁴A=> ( 4 -8cos²A - cos^6A + 4cos⁴A ) = cos⁴A - cos⁴A=> ( 4 -8cos²A - cos^6A + 4 cos⁴A ) = 0=> 4 = 8cos²A + cos^6A - 4cos⁴A
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Have a tough question .I expect an answer.If sinA+sin2A+sin3A = 1.then...
SinA + sin2A + sin3A = 1=> sinA + sin3A = 1 - sin2A=> sinA ( 1+sin2A ) = cos2A=> sinA ( 1 + 1 - cos2A ) = cos2A=> sinA ( 2 - cos2A ) = cos2A=> sinA = cos2A / ( 2 - cos2A)=> sqrt ( 1 - cos2A ) = cos2A / 2- cos2A=> 1 - cos2A = ( cos2A )2 / ( 2 - cos2A )2=> 1 - cos2A = cos4A / ( 4 + cos4A - 4 cos2A )=> ( 1 - cos2A ) ( 4 + cos4A - 4 cos2A ) = cos4A=> ( 4 + cos4A - 4 cos2A -4cos2A - cos6A + 4cos4A = cos4A=> ( 4 -8cos2A - cos6A + 4cos4A ) = cos4A - cos4A=> ( 4 -8cos2A - cos6A + 4 cos4A ) = 0=> 4 = 8cos2A + cos6A - 4cos4A
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Have a tough question .I expect an answer.If sinA+sin2A+sin3A = 1.then prove that .cos6A-4cos4A+8cos2A=4.the replier has his trigonometry almost perfect
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Have a tough question .I expect an answer.If sinA+sin2A+sin3A = 1.then prove that .cos6A-4cos4A+8cos2A=4.the replier has his trigonometry almost perfect for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about Have a tough question .I expect an answer.If sinA+sin2A+sin3A = 1.then prove that .cos6A-4cos4A+8cos2A=4.the replier has his trigonometry almost perfect covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Have a tough question .I expect an answer.If sinA+sin2A+sin3A = 1.then prove that .cos6A-4cos4A+8cos2A=4.the replier has his trigonometry almost perfect.
Have a tough question .I expect an answer.If sinA+sin2A+sin3A = 1.then prove that .cos6A-4cos4A+8cos2A=4.the replier has his trigonometry almost perfect for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about Have a tough question .I expect an answer.If sinA+sin2A+sin3A = 1.then prove that .cos6A-4cos4A+8cos2A=4.the replier has his trigonometry almost perfect covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Have a tough question .I expect an answer.If sinA+sin2A+sin3A = 1.then prove that .cos6A-4cos4A+8cos2A=4.the replier has his trigonometry almost perfect.
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