Math, asked by manjumehta9606, 10 months ago

please tell me the above question

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Answers

Answered by karanjotgaidu

1

Answer:

The answer is 0

Step-by-step explanation:

Sin 70/cos20 = sin 70/sin(90-20) = sin70/sin70 = 1

Similarly,

Cosec 20/sec70 = 1

cos70×cosec20 = cos70×1/sin20 = cos70×1/cos70

= 1

1 + 1 - 2(1) = 2-2 = 0

#WMK

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