pls solve this.....
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Step-by-step explanation:
1. cosec theta = 1 / sin theta
= 1 / AB / BC
= 1 ÷ AB / BC
• cosec theta = BC / AB
2. sec (90 - theta) = 1 / cos theta
= 1 / AB / BC
= 1 ÷ AB / BC
• sec (90 - theta) = BC / AB
3. tan theta = sin theta / cos theta
= opposite side / adjacent side
• tan theta = AB / AC
4. cot (90 -theta) = 1 / tan theta
= 1 / AC / AB
= 1 ÷ AC / AB
• cot (90- theta) = AB / AC
OBSERVATION :
cosec theta = sec (90 - theta)
tan theta = cot (90 - theta)
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