3 years ago

(If A+B+C=180) tan 2A + tan 2B + tan 2C = tan 2A tan 2B tan 2C

1 answer:

7 0

Step-by-step explanation:

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(If A+B+C=180) tan 2A + tan 2B + tan 2C = tan 2A tan 2B tan 2C​