Question

please answer this question ​

Answer 1

Answer:

1

Step-by-step explanation:

1.

hope it will help you

Answer 2

Answer:

sin THITA^2 +cos^2=1 (It is formula)

(cot^2THITA -COSEC^2thita = 1)

.so cot ^2 72-cosec^2 72 =1 because thita (72) is same . ( it is also a formula)

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