Calculate the value of (the angle), if 0° < < 90°, rounded off two decimal places: 1.3.1sin =0,2524 1.3.2cos(3 − 14°) =cos52° 1.3.3tan 2=4

Question

its a sentence then there are questions starting from 1.3.1 till 1.3.4

Comments

Your questions are not readable in a meaningful way. We can see that the questions are labelled 1.3.1 up to 1.3.4, but only 1.3.1, 1.3.2 and 1.3.3 have been provided.

The symbol representing the angle doesn't display. Perhaps it's theta (θ). If so, please replace it with x wherever it appears in the equations so that they make sense.

This will enable someone to answer your questions. You can edit your questions or submit a new set.

Answer 1

I'm guessing what questions 1.3.1-1.3.3 are: for 0°<θ<90°:

1.3.1) sinθ=0.2524; Answer: θ=14.62°

1.3.2) cos(3θ-14°)=cos(52°); 3θ-14=52, 3θ=66°; Answer: θ=22°

1.3.3) 

a) tan(2θ)=4, answer: 2θ=75.96°; answer: θ=37.98°; or:

b) tan²θ=4, tanθ=2, answer: θ=63.43°.

1.3.4) ?