Simplify 7j-6k-5j+4k which explanation : )

*let m∠cob = 50°30’, m∠aob = 70° and m∠aoc = 20°30’. could point c be in the interior of ∠aob? why? a. point c could be the interior of aob but it is not the only case b. point c is the interior of aob c. point c is not the interior of aob d. the given is not possible for the plane geometry answer

The dash figure is a dilation if the original figure. find the scale factor. classify the dilation as an enlargement or a reduction

Cos^2x+cos^2(120°+x)+cos^2(120°-x)i need this asap. pls me