prove that:maths board question
Attachments:
Answers
Answered by
1
i have solved this question hope you will understand
Attachments:
Answered by
1
Solving numerator & Denominator separately & then divide
sinA- 2sin^3A = sinA(1-2sin^2A) = sinA(cos^2A+sin^2A-2sin^2A) = sinA(cos^2A-sin^2A) .....1
2cos^3A- cosA= cosA(2cos^2A- 1) = cosA( 2cos^2A-cos^2A-sin^2A) = cosA(cos^2A-sin^2A) .....2
By dividing 1 by 2
sinA/cosA= tanA = RHS
Similar questions