if Cosecø - Sinø = A³ , Secø-Cosø = b³ prove that a²b²(a²+b²)=1 ..... i need the answer copy and specially in the step how Cos4/3ø×Cos2/3ø+Sin4/3ø×Sin2/3ø... i need a step by step cancellation process don't copy it from google its an request
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Step-by-step explanation:
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