cot 0 + cos éco-1 1+cos e coto-coseco +1 sin e II
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0
Step-by-step explanation:
cot 0 + cos éco-1 1+cos e coto-coseco +1 sin e II
https://www.toppr.com/ask/question/cot-0-cosec-01coto-cosec-0-11-cossin-e/ ok
Answered by
1
Answer:
Assertion
(
sinA−sinB
cosA+cosB
)
n
+(
cosA−cosB
sinA+sinB
)
n
=2cot
n
(
2
A−B
) if n is even
=0 if n is odd.
Reason
sinA−sinB
cosA+cosB
=cot
2
A−B
.
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