Question

sin70/cos20 + cosec36/sec54 - 2cos43.cosec47​

Answer 1

Answer:

hey

Step-by-step explanation:

Formulae used here

Sin(90-theta)=cos theta

sec(90- theta)=cosec theta

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sin70=cos 20. (theta =20,using above formula sin(90-20)= cos 20)

cosec 36=sec 54

cos 43=1/sin 47

1+1-2×1

Zero

Answer 2

⬆️hope it helps you please see the attachment⬆️

thanks