**FLAT 50% OFF**

ENDS IN

- JEE Main
- Mathematics
- Back to Doubt Clearing

Trigonometry doubt

Let A and B denote the satements

**A :** \( \cos \alpha+\cos \beta+\cos \gamma=0\)

**B :** \( \sin \alpha+\sin \beta+\sin \gamma=0\)

If \(\cos (\beta-\gamma)+\cos (\gamma-\alpha)+\cos (\alpha-\beta)=-\frac{3}{2},\)then

(a) Both **A** and **B** are true

(b) Both **A** and **B** are false

(c) **A** is true and **B** is false

(d) **A** is false and **B** is true

Updated Fri, 31 May 2019 05:28 pm

Which of the following statement is not correct with respect to malaria?

- Which Orders is Correct Regarding Melting Point ...
- Why it is easier to pull a heavy object than to push it, on a level ground ? ...
- Sir Please Explain... Why this statement is false and true both? A coil of silver wire is kept s ...
- Gas expanding adiabatically to temperature $T_2$. If $L_1$ and $L_2$ are lengths of the gas column b ...
- Which type of teeth are found in human ? ...
- During mitosis, nuclear membrane disappear at? (a) Telophase (b) Porophase (c) Metaphase (d) A ...
- For how many values of p, the circle $x^2 + y^2 + 2x + 4y – p = 0$ and the coordinate axes hav ...
- Find the direction cosines of the which is perpendicular to the lines with direction cosine proporti ...
- Glucose and mannose are :(a) Anomers

(b) Positional isomers

© 2019 Miso Study India PVT. LTD., All Rights Reserved