08-02-2017
Mathematics

contestada

Find ϴ in the equation sin(ϴ + 15) = cos(2ϴ)

a. 50
b. 75
c. 25
d. 40

Respuesta :

Nirina7 Nirina7

14-02-2017

the answer is c. 25

sin(ϴ + 15) = cos(2ϴ)
sin(ϴ + 15) =sin(25 + 15) =sin(40) =0.64
cos(2ϴ)=cos(2x25)=cos(50)=0.64
so ϴ=25

Answer Link

Otras preguntas

solve for x. x/.2=1.8

Consider a composite wall that includes an 8-mm-thick hardwood siding, 40-mm by 100-mm hardwood studs on 0.65-m centers with glass fiber insulation (paper faced

Brainlist for best answers

Helllllp please!!!!!!

What will the browser display if the following script is executed and the user enters 5 at both prompts?a) nothingb) 0c) 10d) 55d) 556.9 Whenever a value is pl

WHO WAS THE 14 PRESIDENT!!!!!!!!!!!!!!!!!!!!!!!

Be sure to answer all parts. Kc for the reaction of hydrogen and iodine to produce hydrogen iodide, H2(g) + I2(g) ⇌ 2HI(g) is 54.3 at 430°C. Determine the initi

Which of the following is NOT one of the three types of compounds? acids salts bases sugars

physical science!!! please help!!

3x - 7 = 17 is it (x = -8) or (x = 8 )