A. 4-sen α = cos^2 a

B. sen^2 α + cos a + 1=0

C. 5-5 cos α = 3 sen^2 α

D. 8 tg α = 3 cos α

E. 3 cot α = tan α

F. 2 tg α = 3+5 cot α

G. csc^2 = 3 cat α - 1

H. sen α = cos α

I. sen α + cos α = 1

J. 2 sen α = csc α

K. cos^2 α - sen^ 2 α = 1/2

15

step-by-step explanation:

we are given the following expression and we are to solve it and find the product:

-13 × (-5)

solving the given expression in the standard order of solving a mathematical expression, beginning with the opening of brackets and then multiplying the terms and changing their signs.

-3 × -5 = 15 (answer is positive because when negative is multiplied with negative, it gives a positive answer)

true

step-by-step explanation:

correct answer is option b.

step-by-step explanation:

the true statement about geometric figure is option b that is one line can be drawn through all three points.

if three points are on the same plane, they can be connected by a line.