Math, asked by ziyasayyed1405, 7 months ago

show that √1+cosA/1-cosA =
cosec A +cotA​

Answers

Answered by snigdhadey326
1

Answer:

To prove- √(1+cosA)/√(1-cosA)=cosecA + cotA

LHS-

√(1+cosA)/√(1-cosA)

Multiplying with √(1+cosA) on both numerator and denominator, we have,

={√(1+cosA)*√(1+cosA)}/{√(1-cosA)*√(1+cosA)}

=[√{(1+cosA)*(1+cosA)}]/[√{(1-cosA)*(1+cosA)}]

={√(1+cosA)²}/{√(1²-cos²A)}

=(1+cosA)/√(sin²A)

=(1+cosA)/sinA

=(1/sinA)+(cosA/sinA)

=cosecA + cotA

Hence proved...

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