firelord1929 firelord1929

05-05-2019
Mathematics

contestada

cos(70° )cos(20° )+sin(70° )sin(20° )=cos(___°)?

cos70 cos20 sin70 sin20 cos class=

Respuesta :

Аноним Аноним

05-05-2019

Answer:

Step-by-step explanation:

Sum and Difference Formula

cos( U +/- V ) = cosU*cosV -/+ sinU*sinV

cos( U - V ) = cos(70)cos(20) + sin(70)sin(20)

cos( U - V ) = cos (70 - 20)

cos( 50 ) = .642788

Answer Link

Otras preguntas

Who owns the medical record and what are its purpose?

Because of Medicaid and Medicare, whose administration was seen as making great strides in health care? Answer John F Kennedy Richard M Nixon Lyndon B Johnson n

solve 5 ones 3 tenths -0.53

The value of the 5 in 25.694 is ______ the value of the 5 in 18.56

how does the climate of the northeast affect the people/ animals/and plants that live there

5 is less than a number y is under 20

What are the most important questions in life? Why?

write 700/200 as a terminating decimal

What angle do the minute and hour hands of a clock make at 8:00

Forests in New England helped colonists establish settlements by providing

Q&A Education