Math, asked by vaibhavsagare601, 11 months ago

please say answer of all three please ​

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Answered by bdas41333
1

Answer:

Q12 Ans is 0

Step-by-step explanation:

tan²10 - cot²80

By using the formula tan= cot(90-Thetha)

tan²(90-10)-cot²80

=cot²80-cot²80

0

Q13 Answer is 43

By using the formula Mode= 3 Median - 2 Mean

50.5=3×45.5-2 Mean

50.5=136.5-2mean

-86=-2 Mean

-86/-2= Mean

43= Mean

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