Will mark BRAINLIEST!!
12(5y+3)

*Explain the steps pls*

Find the arc length parameter along the given curve from the point where tequals=0 by evaluating the integral s(t)equals=integral from 0 to t startabsolutevalue bold v left parenthesis tau right parenthesis endabsolutevalue d tau∫0tv(τ) dτ. then find the length of the indicated portion of the curve r(t)equals=1010cosine tcost iplus+1010sine tsint jplus+88t k, where 0less than or equals≤tless than or equals≤startfraction pi over 3 endfraction π 3.

For the following geometric sequence, find the recursive formula. {-80, 20, -5, } i need : ')

If tan2a=cot(a+60), find the value of a, where 2a is an acute angle