Math, asked by pom000006, 3 months ago

cos 105° + cos 15°=
1/
V2

Answers

Answered by kundan8757783426

1

Answer:

2cos(105+15)/2× cos(105-15)/2=2cos60×cos45=

Step-by-step explanation:

2×1/2×1/√2=1/√2right answer

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