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convert sec into cosec and cot into tan
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11th
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Answered by
1
Answer:
sec(90-Ф)=cosecФ
cot(90-Ф)=tanФ
sec(90-(65+Ф)) -sec(25-Ф) -cot(90-(55-Ф))+cot(35+Ф)
sec(25-Ф)-sec(25-Ф)-cot(35+Ф)+cot(35+Ф)
=0
Step-by-step explanation:
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Answered by
13
Answer:
0
Step-by-step explanation:
By applying ( 90 - θ ) Concept
Cosec ( 65° + θ ) - Sec ( 25° - θ) - tan ( 55° - θ ) + Cot ( 35° + θ)
⇒ Cosec ( 65° + θ ) - cosec [90° - (25° - θ)] - tan ( 55° - θ ) + tan [90° - (35° + θ)]
⇒ Cosec ( 65° + θ ) - Cosec ( 65° + θ ) - tan ( 55° - θ ) + tan ( 55° - θ )
⇒ 0
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