1.

Please answer fast 2+tan²a+cot²a=1/sin²a-sin⁴a prove​

Answer»

Step-by-step EXPLANATION:

to SHOW 2+tan²a+cot²a=1/sin²a-sin⁴a

2+tan²a+cot²a=1+tan²a+1+cot²a=sec²a+cosec²a

=1/cos²a+1/sin²a

=sin²a+cos²a/(cos²asin²a)

=1/(1-sin²a)(sin²a) SINCE 1-sin²a=cos²a

=1/(sin²a-sin⁴a)



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