Trigonometry Answers

solve the following

1) 3/2x + 5/3y

2) 7/12ab - 11/15a^2

3) 8/x^2-4x + 2/x

4) x+2/4 + 3x+1/3

5) 6/x^2-8x - 3/x

find the slope of the line that is a) parallel and b) perpendicular to the given line

1a) 5x+2y=10

1b) y=-7

1c) x=10

write an equation for the line in point/slope form and slope/intercept form that has the given condition.

2a) passes through (-7,2) and is parallel to 7x+2y=0

2b) passes through (3,-1) and is perpendicular to y=2x-3

How do you find the roots of the equations x^3-12x^2-2x+24 and x^3-5x^2+4x?

tan x sin x = sec x - cos x

i need help solving this trig identity. sin^6x = cos^6x = 1-3/4sin^22x

A two storeyed building has the height of its lower storey 12 metre and that of upper storey 13 metre. Find at what distance the two storeys subtend equal angles to an observer's eye at height 5 metre from the ground.

Find the product of (-1+3i)(6+8i)

prove
sinD=2tan(D/2)/1+tan^2(D/2)

prove
sinD=2tan(D/2)/1+tan^2(D/2)

Prove that cos40.cos50=1