Question

pls answer clearly on white sheet. Prove that sin20° sec70° = 1​

Answer 1

Step-by-step explanation:

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Answer 2

Hi Tanushree here.

Answer:

We can write sin 20° as 1/cosec 20° .

By applying, sec theta =(cosec theta-90°),we get 1/sec 70° * sec 70° cut them and u get 1.

Step-by-step explanation:

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