Question

find the value of cos2teta​

Answer 1

Answer:

mate hope it was helpful to you

Answer 2

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The value of cos 2 ø;

=> If sin ø = 1/3

then;

=> cos 2 ø= 7/9.

>>>>>

ᴛʜɪs ɪs ʙᴇᴄᴀᴜsᴇ,

Tʜᴇ ᴄᴏsɪɴᴇ ᴅᴏᴜʙʟᴇ ᴀɴɢʟᴇ ғᴏʀᴍᴜʟᴀ ɪs ᴄᴏs(2ᴛʜᴇᴛᴀ)=ᴄᴏs2(ᴛʜᴇᴛᴀ) - sɪɴ2(ᴛʜᴇᴛᴀ).

Hσρє ıт нєℓρѕ уσυ!