Solve 1.35*4.9=1.35*cos(1^circ)*4.25+1.35*cos(38^circ)*2.9

$$1.35 \times 4.9=1.35 \times \cos ( 1 ^ { \circ } ) \times 4.25+1.35 \times \cos ( 38 ^ { \circ } ) \times 2.9$$

Verify

Solution Steps

Evaluate trigonometric functions in the problem

$$1.35 \cdot 4.9 = 1.35 \cdot 0.9998476951563913 \cdot 4.25 + 1.35 \cdot 0.788010753606722 \cdot 2.9$$

Multiply 1.35 and 4.9 to get 6.615.

$$6.615=1.35\times 0.9998476951563913\times 4.25+1.35\times 0.788010753606722\times 2.9$$

Multiply 1.35 and 0.9998476951563913 to get 1.349794388461128255.

$$6.615=1.349794388461128255\times 4.25+1.35\times 0.788010753606722\times 2.9$$

Multiply 1.349794388461128255 and 4.25 to get 5.73662615095979508375.

$$6.615=5.73662615095979508375+1.35\times 0.788010753606722\times 2.9$$

Multiply 1.35 and 0.788010753606722 to get 1.0638145173690747.

$$6.615=5.73662615095979508375+1.0638145173690747\times 2.9$$

Multiply 1.0638145173690747 and 2.9 to get 3.08506210037031663.

$$6.615=5.73662615095979508375+3.08506210037031663$$

Add 5.73662615095979508375 and 3.08506210037031663 to get 8.82168825133011171375.

$$6.615=8.82168825133011171375$$

Compare 6.615 and 8.82168825133011171375.

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