Question

Help me​ guys fast as ​

Answer 1

• cos(180-x)=-cosX

`\\ \rm\Rrightarrow tan^2135-cosec^260=-xcos45.sin45.cot60`

`\\ \rm\Rrightarrow (-1)^2-((2)/(√(3)))^2=-(x)/(√(2))* (1)/(√(2))* (1)/(√(3))`

`\\ \rm\Rrightarrow 1-(4)/(3)=(-x)/(2√(3))`

`\\ \rm\Rrightarrow (3-4)/(3)=(-x)/(2√(3))`

`\\ \rm\Rrightarrow (-1)/(3)=(-x)/(2√(3))`

`\\ \rm\Rrightarrow (1)/(√(3))=(x)/(2)`

`\\ \rm\Rrightarrow x=(2)/(√(3))`