Math, asked by cbhaskarreddy, 9 months ago

if triangle ABC right angle at angle C then find the value of Cos A + B​

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Answered by YOGESHmalik025
15

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Answered by RishiAEC
7

Answer:

Step-by-step explanation: as C is right angle, so , the summation of other angles are (180-90)=90. A+B=90. so, cos(A+B)=cos90°=0.

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