1
MHT CET 2021 23th September Morning Shift
MCQ (Single Correct Answer)
+2
-0

In a triangle $$\mathrm{ABC}$$, with usual notations $$\mathrm{a}=2, \mathrm{~b}=3, \mathrm{c}=5$$, then $$\frac{\cos \mathrm{A}}{\mathrm{a}}+\frac{\cos \mathrm{B}}{\mathrm{b}}+\frac{\cos \mathrm{C}}{\mathrm{c}}=$$

A
$$\frac{19}{30}$$
B
$$\frac{19}{60}$$
C
$$\frac{23}{60}$$
D
$$\frac{38}{35}$$
2
MHT CET 2021 22th September Evening Shift
MCQ (Single Correct Answer)
+2
-0

In $$\Delta ABC$$, with usual notations $$\mathrm{\frac{b\sin B-c\sin C}{\sin(B-C)}}=$$

A
b
B
C
C
a
D
a + b + c
3
MHT CET 2021 22th September Evening Shift
MCQ (Single Correct Answer)
+2
-0

With usual notations, in any $$\triangle A B C$$, if $$a\cos B=b \cos A$$, then the triangle is

A
an isosceles triangle
B
an equilateral triangle
C
a right angled triangle
D
a scalene triangle
4
MHT CET 2021 22th September Morning Shift
MCQ (Single Correct Answer)
+2
-0

In $$\triangle A B C$$, with usual notations, $$2 a b \sin \frac{1}{2}(A+B-C)=$$

A
$$a^2-b^2-c^2$$
B
$$a^2+b^2-c^2$$
C
$$a^2+b^2+c^2$$
D
$$a^2-b^2+c^2$$
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