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mel-nik [20]
3 years ago
13

What is the measure of ∠P, to the nearest degree? 24° 42° 55° 101°

Mathematics
2 answers:
Papessa [141]3 years ago
6 0

Answer:

The ∠P is equal to 55°

Step-by-step explanation:

We are given three sides of triangle and to calculate the one angle of corresponding to 10 ft side.

Using cosine law:

\cos\angle C=\dfrac{a^2+b^2-c^2}{2ab}

where,  

a = 12 ft

b = 5 ft

c = 10 ft

∠C = ∠P

Substitute into formula

\cos\angle P=\dfrac{12^2+5^2-10^2}{2\cdot 12\cdot 5}

\cos \angle P=0.575

\angle P=\cos^{-1}0.575

\angle P=54.9\approx 55^\circ

Hence, The ∠P is equal to 55°

Serhud [2]3 years ago
4 0
I used cosine law and I got : 55°
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