Math, asked by evapauly6668, 8 months ago

derive the value of cos 65

Answers

Answered by deveshreem

Answer:

the value of cos65 without using calculator? We can use the trigonometric formula: cos(a+b)=cos(a)*cos(b)-sin(a)*sin(b). Then, cos65=cos60*cos5-sin60*sin5

Answered by Anonymous

Answer:

the value of cos 65 is (-0.562453851)

Step-by-step explanation:

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