Math, asked by bebiraghu151, 9 months ago

sec70sin20-cos70 cosec20

Answers

Answered by RAMAKRISHNA11

1

Answer:

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Answered by anoop6570

0

Answer:

sec(90-20) sin20 - cos70 cosec (90-70)

cosec20 sin20 - cos 70 sec 70

1/sin20 sin20 - cos 70 1/cos 70

1 - 1

0

Step-by-step explanation:

use simple identies

sec (90- theta) = cosec

1/sin = cosec

1/cos = sec

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