In a $\Delta \;ABC,\;{\rm{cosec}}\;A\left( {\sin B\cos C + \cos B\sin C} \right)$ is equal to

JEE MATHEMATICS MCQ: PROPERTIES OF TRIANGLES

1 Easy

1 of 1

Understanding +4 | -1

In a

\Delta \;ABC,\;\mathrm{cosec}\;A\left( {\sin B\cos C + \cos B\sin C} \right)

is equal to

View answer and explanation

Correct option: C

Option C (1) is correct because the expression simplifies to sin(B+C)/sin(A), and since A+B+C = 180, sin(B+C) = sin(A).

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{p_1},{p_2},{p_3}

\Delta \;ABC

A,B,C

\Delta

p_1^{ - 2} + p_2^{ - 2} + p_3^{ - 2}

5k,\;6k,\;5k

k

\Delta \,ABC

a = \left( {b - c} \right)\sec \theta

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\Delta

\Delta \;ABC

\tan A

A

2 s