Evaluate the following expression 6cos 0 degrees 3sin 270 d

Evaluate the following expression: 6cos 0 degrees - 3sin 270 degrees - 4tan 108 degrees

Solution

given 6cos 0 degrees - 3sin 270 degrees - 4tan 108 degrees

6cos 0 - 3sin 270 -4tan 108

cos 0 = 1 and sin 270 = -1 and tan108 = -3.07

6(1) -3(-1) -4(-3.07)

6 + 3 +12.28

= 21.28