Question

28. Find value of Cos 60°. Sin 30° - sin 60°.Cos 30°
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Answer 1

Answer:

Hope it helps you!!!!!!

Answer 2

answer will be -1/2

Step-by-step explanation:

cos 60° = 1/2

sin 30° = 1/2

sin 60° = √3 /2

cos 30° = √3 /2

on putting values in give que

1/2 × 1/2 - √3 /2 × √3 /2

1/4 - 3/4

-2/4

-1/2