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Mathematics, 05.05.2021 14:00 Sashakimora2020

A triangle ABC, a=7cm, b=4cm ,c=5cm. Find the value of:
a)cos A
b)sin A​

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A triangle ABC, a=7cm, b=4cm ,c=5cm. Find the value of:
a)cos A
b)sin A​...

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