Math, asked by kstanishq977, 11 months ago

cos²Φ+sinΦ+1=0
solve for Φ

Hint: use identity formula sin²Φ+cos²Φ=1​

Answers

Answered by MukulCIL
1

Answer:

270 degree

Step-by-step explanation:

equations becomes

sin^2x - sinx -2=O

sin^2x - 2sinx + sinx -2 =0

Sinx(Sinx-2) +1(Sinx-2)=0

(Sinx+1)(Sinx-2)=0

Sinx cant be greater than 1

hence sinx=-1

x will be 270 degree

Similar questions