Question

Q.1.If bcos = a, then prove that cosec 0 + coto=√b+a/√b-a
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Answer 1

ans:

step by step explanations:

b cosQ =a

or cosQ= a/b. or cos²Q = a²/b². or 1-sin²Q= a²/b²

or sin²Q= 1-a²/b²

or sinQ= √{(b²-a²)/b²} = √(b²-a²)/b

cosec Q +cotQ

= 1/sinQ + cosQ/sinQ

= (1+cosQ)/sinQ

= (1+a/b)/ √(b²-a²)/b

= (a+b)/b×b/√{(b+a)(b-a)

=(a+b)/ √{a+b) (b-a)

= √(b+a)/√ b-a (proove)