problems on factorization formulae | de-factorization formulae examples | factorization formula use

factorization and de-factorization formulae lecture 2 In this video we solve following questions. Q 1) If 2cos70°.sin50° = sinA - sin B. Find the angles A and B. Q 2) Express 4cos30°sin20° as the sum or difference of trigonometric ratios. Q 3) Evaluate 2cos75°cos15° without using calculator. Q 4) show that sin50° - sin70° + sin10° = 0. Q 5) Express as product and evaluate sin99° - sin81°. Q 6) Express as product form cos4θ + cos8θ. Q 7) show that cos59° + sin59° = √2 cos14°. factorization formula use how to apply factorization formula problems on factorization formulae examples on factorization formula factorization formulae examples examples on factorization formulae how to use factorization formula factorization formula based questions problems on factorization formulas de-factorization formulae problems de-factorization formulae examples factorization formulas questions