Solve sin230{^{\circ}}+ cos245{^{\circ}}- cos0{^{\circ}}. tan45{^{\circ}} | Equatix - Math Solver

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Example

3(r+2s)=2t-4

a⋅(b-2)=3b

3(r+2s)=2t-4

a⋅(b-2)=3b

Question

$$\sin 230 ^ { \circ } + \cos 245 ^ { \circ } - \cos 0 ^ { \circ } . \tan 45 ^ { \circ }$$

Evaluate

$-2.18866270485967784$

Solution Steps

Evaluate trigonometric functions in the problem

$$-0.7660444431189779 + -0.42261826174069994 - \cos(0)$$

Subtract $0.42261826174069994$ from $-0.7660444431189779$ to get $-1.18866270485967784$.

$$-1.18866270485967784-\cos(0)$$

Get the value of $\cos(0)$ from trigonometric values table.

$$-1.18866270485967784-1$$

Subtract $1$ from $-1.18866270485967784$ to get $-2.18866270485967784$.

$$-2.18866270485967784$$