Question

known can solve it ------>>cosec 20 - sec 70?​

Answer 1

Answer:

step by step explaination

cosec 20 = sec (90 - ⊕)

∴ cosec 20 = sec (90 - 20 )

cosec 20 = sec 70

now,

cosec 20 - sec 70

∵cosec 20 = sec 70

∴ sec 70 - sec 70 = 0