solve this as soon as possible....plzzzzz... question no. (vii)
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Nikitaparihar:
what is the answer
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cotx cotx - cosecx cosecx + sqrt3 tan (90-78) tan 60 tan 78
= cot sq x - cosec sq x + sqrt3 cot 78 (sqrt3) tan 78
= cot sq x - cosec sq x + sqrt 3 (1/ tan 78) sqrt3 tan 78
= cot sqx - cosec sq x + 3
= -1+3
2
= cot sq x - cosec sq x + sqrt3 cot 78 (sqrt3) tan 78
= cot sq x - cosec sq x + sqrt 3 (1/ tan 78) sqrt3 tan 78
= cot sqx - cosec sq x + 3
= -1+3
2
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