Leysa 4sin(15)2cos(40)=2sin(10)

$$4 \sin ( 15 ) 2 \cos ( 40 ) =2 \sin ( 10 )$$

Staðfesta

Lausnarskref

Evaluate trigonometric functions in the problem

$$4 \cdot 0.25881904510252074 \cdot 2 \cdot 0.766044443118978 = 2 \cdot 0.17364817766693033$$

Styttu burt 2 báðum megin.

$$4\times 0.25881904510252074\times 0.766044443118978=0.17364817766693033$$

Margfaldaðu 4 og 0.25881904510252074 til að fá út 1.03527618041008296.

$$1.03527618041008296\times 0.766044443118978=0.17364817766693033$$

Margfaldaðu 1.03527618041008296 og 0.766044443118978 til að fá út 0.79306756509658460206982213041488.

$$0.79306756509658460206982213041488=0.17364817766693033$$

Bera saman 0.79306756509658460206982213041488 og 0.17364817766693033.

$$\text{false}$$