Math, asked by aayushdeshmukh008, 1 month ago

the value of sin 420° + cos 390° is

Answers

Answered by ItzMeMukku

23

Sin420=sin60

Cos 390=cos 30

Cos (-300)=cos (60)

Sin(-330)=sin30

On putting,

(root3/2)²+(1/2)²=1

Answered by RameshChandraJoshi

1

Answer:

eska answer upper paper me hai.

Attachments:

Previous Question

Next Question

Similar questions

Physics, 26 days ago

$. Describe the series and parallel ckt.

Math, 26 days ago

if f(x, y)=x^2+y^2 ,x=t^2+t^3 y=t^3+t^9. find df/ dt at t=1...

Math, 26 days ago

1.represent the given rational number on the numberline. a.2/3 b.- 4/5 c. 12/7.

English, 1 month ago

Defrene noun Give two exame...

Math, 1 month ago

The ratio 40 cm to 1 m is (a). 2 : 5 (b). 3 : 5 (c). 4 : 5 (d). none of these...

Biology, 8 months ago

Name the process of reproduction in the following organisms - 1. Spirogyra 2. Bacteria 3. Bread mould 4. Chlorella...

Geography, 8 months ago

how polar star and lunar eclipse provide proof that the Earth is spherical in shape...

Math, 8 months ago

intregation of e^x cos^2(e^x)dx...