Реште,пожалуйста срочно,довести тотожнисть 100БАЛОВ!!! !)(cos⁡α/cos⁡4α -sin⁡α/sin4α)∙(cos6α-cos10α)/sin3α=4 sin2α

2)(cos6α/sinα+sin6α/cosα)∙(sin10α-sin6α)/cos5α= 4cos8α
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