find the value of 7 cosec square theta is equal to minus 14 by 2 cot square theta
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Answered by
1
Answer:
Given, 7cosecθ−3cotθ=7
(7cosecθ−3cotθ)
2
=49
On simplifying, we get
49cosec
2
θ−42cotθ.cosecθ+9cot
2
θ=49
⇒49(1+cot
2
θ)−42cosecθ.cotθ+9cot
2
θ=49
⇒42cosecθ.cotθ=58cot
2
θ ....(1)
Now, let 7cotθ−3cosecθ=x
Thus x
2
=49cot
2
θ+9cosec
2
θ−42cosecθ.cotθ
⇒x
2
=58cot
2
θ+9−58cot
2
θ (using (1))
⇒x
2
=9
⇒x=3
Answered by
2
Answer:
Anyoseyoo ami...
nice to meet you ..
sorry for not answering your question ..
Borahae...>•<..
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