Question

If (x − 2)(sin60°cos30° + cos60°sin30°) = sin2 60° + tan4 45° − cosec
245°
then find x.

Answer 1

Answer:

7/4

Step-by-step explanation:

sinacosb + cosasinb = sin(a+b)

therefore,

(x-2)* sin(90) = 3/4 + 1 - 2                   # sin60 = sqrt(3)/2, tan45 = 1,csc^2(45)=2

(x-2) = -1/4

x=7/4