सिद्ध कीजिए।
cosA+ sinA/cosA-sinA=tan(π\4-A)
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Answer:
cosa+sina/cosa-sina
devide by cosa in each term
=1+tana/1-tana
=tanΠ/4+tana/1-tanΠ/4tana
=tan(Π/4+a)
Step-by-step explanation:
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