Related Questions

In a spherical triangle ABC, right angled at C, sin b equals
A sin a cos A
B cos a sin A
C tan a cot A
D cot A tan a
If S is the sum of three angles of a spherical triangle, the spherical excess equals
A S - 90°
B S - 180°
C S - 270°
D S - 360°
According to Napier's Rules of circular parts for a right angled triangle, sine of middle part equals the product of
A Tangents of two adjacent parts
B Sines of two adjacent parts
C Cosines of two adjacent parts
D Both (A) and (B) above
A triangle has a base x and an altitude y. A second triangle has a base twice the altitude of the first triangle, and an altitude twice the base of the first triangle. What is the area of the second triangle?
A 2xy
B 0.5xy
C 0.66xy
D 4xy
∆ABC এর ক্ষেত্রে- i. যদি ∠A = B = ∠C তবে ∆ABC সমবাহু ত্রিভুজ ii. যদি ∠A, ∠B এবং ∠C, প্রত্যেকে সূক্ষ্মকোণ তবে ∆ ABC সূক্ষ্মকোণী ত্রিভুজiii. ∠A = B + C হলে ∆ABC সমকোণী ত্রিভুজনিচের কোনটি সঠিক?
A i ও ii
B i ও iii
C ii ও iii
D i, ii ও iii
A point D is taken on the side BC of a right-angled triangle ABC, where AB is hypotenuse. Then
A AB2 + CD2 = AD2 + BC2
B CD2 + BD2 = 2AD2
C AB2 + AC2 = 2AD2
D AB2 = AD2 + BC2
sin 75∘ + sin 15∘sin 75∘ - sin 15∘ = ? 
A 3
B 2
C 12
D 13
sin-1x + sin-1y = π2  হলে x2+ y2 এর মান কত? (If sin-1x + sin-1y = π2  what is the value of x2 + y2?)
A 1
B 2
C 3
D 4
In a right angled triangle the horizontal side measures 8 cm and the vertical side measures 12 cm. What is the area of the triangle?
A 96 sq cm
B 52 sq cm
C 48 sq cm
D 100 sq cm
If a, b, and c are three sides of a right angled triangle triangle, which of the following statements cannot be true?
A a=b=c
B a>b and a>c
C b=c or a=c or a=b
D None of these

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