Math, asked by farjaad09, 2 months ago

Prove cos 40 / sin 50 + sin 20 / cos 70 - tan 75 × tan 15 = 1

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Answered by gummadavellibhaskarr

1

Answer:

cos40/sin(90-40)+sin20/cos(90-20)-tan75*tan(90-75)

cos40/cos40+sin20/sin20-tan75*cot75

1+1-1

=1

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