Basic of Trigonometry-1( Class - X)

Complementary angles add together to give:

• 90
• 180
• 360

What is the name given to the longest side of a right-angled triangle?

• Hypotenuse
• Opposite
• Adjacent

The side ‘next to’ the marked angle is called:

• touching
• adjective
• adjacent

The side PQ may be represented by the lower case letter:

• p
• q
• r

The sides of the triangle have been labelled to match the opposite vertices. Name the vertex of the right angle.

• ∠P
• ∠Q
• ∠R

Insert a single capital letter to make this statement true. Side opposite ∠B = Side adjacent to ∠ ____

• A
• B
• C

In which of these diagrams are all sides correctly named, with respect to angle P?

• a
• b
• c

The ladder, the ground and the side of the building form a right-angled triangle. What lies along the side adjacent to θ?

• Ground
• Ladder
• Side of building

The tree, the Sun’s ray and the shadow form a right-angled triangle. Describe the shadow side of the triangle in relation to α.

• Opposite
• Adjacent
• Hypotenuse

What size is the angle opposite the 8 cm side in the triangle? Angle =

• 90
• 53
• 40