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In ∆PQR, ∠P = 90degrees , PQ= 12 cm, PR=16cm. Find ∠Q

User Misteryes
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1 Answer

5 votes

Answer:

∠Q = 53.13 degrees

Explanation:

Given that ∆PQR, ∠P = 90degrees , this means that the triangle is a right angled triangle

Hence using the notation

SOH CAH TOA

where S is sine, C is cosine, T is tangent and O, A and H represents the size of the opposite, adjacent and hypotenuse sides

Considering ∠Q and the given sides

PR=16cm is the opposite side,

PQ= 12 cm is the adjacent side hence we use TOA

Tan Q = 16/12 =

Q = Arc tan 16/12

= 53.13 degrees

User James Faulcon
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