Math, asked by JSINGH1322, 11 months ago

the value of cos80°cos10°-sin80°sin10°=

Answers

Answered by tanushkadas9

1

Answer:

cos(80+10)

cos90

0.........

Answered by sweta2114

2

Answer:

cos80°cos(90°-80°) - sin80° sin(90°-80°)

Step-by-step explanation:

cos80°sin80°-sin80°cos80°

= 0

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