Math, asked by 7499117415, 8 months ago

cos 60° x cos 30° + sin 60°x sin 30°

Answers

Answered by ʙᴇᴀᴜᴛʏᴀɴɢᴇʟ

4

Step-by-step explanation:

Cos60×Cos30 + Sin60× Sin30.

= 1/2 × root 3/2 + root 3/2 × 1/2

= root 3/4 + root 3/4

= 1 .

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