Value of cosec^2(90-A)-tan^2A
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Answered by
4
Answer:
Sec^2A - Tan^2A = 1
Step-by-step explanation:
cosec^2(90-A) - tan^2A. (cosec(90-A) = secA)
= sec^2A - tan^2A. (1+tan^2A = sec^2A)
= 1
Answered by
3
cosec^2(90°-A) - tan^2A
= 1/cos^2A - sin^2A/cos^2A
= (1-sin^2A)/cos^2A
= cos^2A/cos^2A
= 1
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