Question

Triangle PQR is similar to Triangle DEF, with point P corresponding to D, point Q corresponding to E and point R corresponding to F, 7 Angle P = 90°, cos E=7/8.Calculate the value of sin R.​

Answer 1

Answer:

a sin 15° =

=

x = 8 × sin 15°

≈ 2.07 (correct to two decimal places)

b cos 28° =

=

a = 12.2 × cos 28°

≈ 10.77 (correct to two decimal places)