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1) 5605 0- था 01, णि 0= 0°,30°, 45°, 60° . follousyjii) cosec2 9 cot29= 1, for g= 30, 45%, 60:90 |
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Answer» ii) sec0*sec0-tan0*tan0 = 1-0 = 1 sec30*sec30-tan30*tan30 = 4/3-1/3 = 1 sec45*sec45-tan45*tan45 = 2-1 = 1 sec60*sec60-tan60*tan60 = 4-3 = 1iii)cosec30*cosec30-cot30*cot30 = 4-3 = 1 cosec45*cosec45-cot45*cot45 = 2-1 = 1 cosec60*cosec60-cot60*cot60 = 4/3-1/3 = 1 cosec90*cosec90-cot90*cot90 = 1-0 = 1 |
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