Math, asked by pragatibhatt2922, 9 months ago

evaluate cos 195 degree

Answers

Answered by FRyder

1

Step-by-step explanation:

cos 195°

cos (180 + 15)

-cos 15

Answered by AbhinavGupta0211

4

Answer:

Cos 180 +15

= -cos 15

= -cos (60-45)

Apply formula we get

= -√3/2

Step-by-step explanation:

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