Question

In PQR, ZP = 60°, ZQ = 65° then find Z R.​

Answer 1

Answer:

Angle R = 55 degree( according to angle sum property of triangle)

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Answer 2

Step-by-step explanation:

In ∆PQR,

Measurement of angle ZP - 60°

Measurement of angle ZQ - 65°

Therefore, the measurement of angle ZR = ?

Let's assume angle ZR as x

Hence,

By Pythagoras' Theorem,

${a}^{2} = {b}^{2} + {c}^{2} \\ = {(zr)}^{2} = {60}^{2} + {65}^{2} \\ = {(zr)}^{2} = 3600 + 4225 \\ = {(zr)}^{2} = 7825 \\ = zr = \sqrt{7825} \\ = zr = 85$

Hence, the measurement of angle ZR is 85°

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