Math, asked by pintusngh6969, 1 year ago

Find the value of cosAcosB-sinAsinA when A=B,=45°

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Answered by OptimusPrimeRetunes

0

cos45 =1/√2, sin45=1/√2, 1/√2*1/√2-1/√2*1/√2=1/2-1/2=0

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