Solve 1-2sin^250^circ

$$1 - 2 \sin ^ { 2 } 50 ^ { \circ }$$

Evaluate

$$-0.173648177666930240985327528968$$

Solution Steps

Evaluate trigonometric functions in the problem

$$1 - 2 \cdot 0.766044443118978 ^ {2}$$

Calculate 0.766044443118978 to the power of 2 and get 0.586824088833465120492663764484.

$$1-2\times 0.586824088833465120492663764484$$

Multiply 2 and 0.586824088833465120492663764484 to get 1.173648177666930240985327528968.

$$1-1.173648177666930240985327528968$$

Subtract 1.173648177666930240985327528968 from 1 to get -0.173648177666930240985327528968.

$$-0.173648177666930240985327528968$$

Factor

$$-0.173648177666930240985327528968$$