Math, asked by shivamgupta17978, 9 months ago

If ܣ + ܤ + ܥ = ߨ then prove that

cosଶ ܣ + cosଶ ܤ + cosଶ ܥ = 1 െ 2 cos ܣ cosܤ cos ܥ.

Hence prove that cos 60଴ = ଵ

ଶ

.

Answers

Answered by srigunabhvn

1

Answer:

HENCE PROVED!

Step-by-step explanation:

no steps required.....

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