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tan theta equals to under root 1/7 evaluate cosec square theta minus tsec squared theta by cosec square theta + secant squared theta​

Answer»

ANSWER:

tanθ=71⇒cotθ=7

∴sec2θ=(1+tan2θ)=1+71=78 and cosec2θ=(1+cot2θ)=1+7=8.

∴cosec2θ+sec2θcosec2θ−sec2θ=8+788−78=6448=43.

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