Math, asked by masoud95, 1 year ago

Sec70°sin20°- cos20° cosec70°

Answers

Answered by kiranlalam

0

We can write sec 70 as cosec20 and sin as 1/cosec20 and cos 20 as sin70 and cosec70 as 1/sin70 so the answer will be zero

Answered by rajatrai77

0

(sin20÷cos70)-( cos 20÷sin70)= (sin20×sin70 - cos 20cos70)÷ cos70sin70 = cos90÷cos70sin70 = 0

your answer is 0.

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