Question Simplify the expression −cos2(a)×b Evaluate sin(a)×bsin(a)−bMultiply the terms sin2(a)×b−bTransform the expression b(sin(a)−1)(sin(a)+1)Transform the expression b(−cos2(a))Transform the expression −bcos2(a)Solution −cos2(a)×b Show Solution Factor the expression b(sin(a)−1)(sin(a)+1) Evaluate sin(a)×bsin(a)−bMultiply the terms sin2(a)×b−bFactor out b from the expression (sin2(a)−1)bUse a2−b2=(a−b)(a+b) to factor the expression (sin(a)−1)(sin(a)+1)bSolution b(sin(a)−1)(sin(a)+1) Show Solution
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