Find the value of the following: 45 ÷ (-9)

Find the value of the following: 35 - (-64)

Find the value of the following: (tan45^(@))/("cosec"30^(@))+(sec60^(@))/(cot45^(@))-(5sin90^(@))/(2cos0^(@))

Find the value of the following: tan15^(@)tan30^(@)tan45^(@)tan60^(@)tan75^(@)

Find the value of the following: -200 - (+100)