3 years ago

QR = 36 ; PR = 45 ; PQ = 21, Sin ?_ = 21 / 45

Mathematics

2 answers:

Andreyy893 years ago

8 0

Answer:

R, R=27.8°

Step-by-step explanation:

21/45 = PQ/PR

Sin R = 21/45

R = 27.81814928

sammy [17]3 years ago

7 0

Answer:

Sin = PQ / PR = OPPOSITE / HYPOTENUSE

Step-by-step explanation:

Please find the attached file for a clearer understanding.

SOHCAHTOA

Sin = opposite / Hypotenuse

Cos = Adjacent / Hypotenuse

Tan = opposite / Adjacent

Math is fun

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QR = 36 ; PR = 45 ; PQ = 21, Sin __?___ = 21 / 45

QR = 36 ; PR = 45 ; PQ = 21, Sin ?_ = 21 / 45