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Recent questions tagged trignometry

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1 answer

1

ISI2019-MMA-9
$(\cos 100^\circ + i \sin 100^\circ)(\cos 0^\circ + i \sin 110^\circ)$ is equal to $\frac{1}{2}(\sqrt3 – i)$ $\frac{1}{2}(-\sqrt3 – i)$ $\frac{1}{2}(-\sqrt3 +i)$ $\frac{1}{2}(\sqrt3 + i)$

Sayan Bose asked in Others May 6, 2019

1.0k views

1 vote

1 answer

2

ISI2019-MMA-8
For $0 \leq x < 2 \pi$, the number of solutions of the equation $\sin^2x + 2 \cos^2x + 3\sin x \cos x = 0$ is $1$ $2$ $3$ $4$

Sayan Bose asked in Others May 6, 2019

1.2k views

1 vote

1 answer

3

ISI2019-MMA-7
The value of $\frac{1}{2\sin10^\circ}$ – $2\sin70^\circ$ is $-1/2$ $-1$ $1/2$ $1$

Sayan Bose asked in Others May 6, 2019

816 views

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Recent questions tagged trignometry