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CBSE Class 10 Answered

sin²30°.sec²60°+tan²45°.cosece²30°
Asked by pednekarpreeti37 | 03 Oct, 2023, 08:55: PM
answered-by-expert Expert Answer
Let x = sin230 sec260 + tan245 cosec230
 
sin30 = 1/2
 
sec 60 = 1/cos60 = 2
 
tan45 = 1
 
cosec 30 = 1 / sin30 = 2
 
 
Hence x = (1/2)2 (2)2 + 1 ( 2)2 = 5
Answered by Thiyagarajan K | 04 Oct, 2023, 07:39: AM

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